leach

And extracting it from this rock often means leaching it out with cyanide.

The marketing coordinator was concerned about what the chemicals leaching out of some common types of plastic might be doing to her body.

The chemical process industries use leaching but the process is usually called extraction, and organic solvents are often used.

No leaching out of the enzyme takes place during the reaction and the colloidal stability is not impeded by the adsorbed biomolecules.

It began to take shape after indoor leaching experiments, site conditions experiments, pilot-scale experiments and industrial experiments.

Such fertilizer leaching is responsible for dead zones across the world, like the one at the mouth of the Mississippi River currently.

Once injected into an aqueous environment, the polymeric mixture solidified into a solid implant due to the leaching of NMP.

The interest of such a two step process in comparison with the usual bacterial leaching is that the two main reactions can be opt. . .

pizza machine, nuts slicing machine, the wind leaching rooms, wash their hands pool disinfection, and other ancillary products.

Whether the in-situ leaching method is successful depends on the quality of borehole engineering to a great extent.

Since the reaction of chemistry is fast, the diffusion reaction should be intensified to improve the leaching rate of indium.

Heap leaching is a countercurrent process where the solid is in a stationary heap and the solvent percolates through the solid.

Arsenic-bearing gold ore is one of the refractory gold ores . Its conventional cyanidation leaching rate is generally very low.

Experimental results indicate that the whole precess of leaching is still controlled by. the diffusion of reactants in the presence of MS.

Essentially, leaching is the way in which energy is in taken by the active life body, and should not be regarded simply as "catalysation" .

Made from pure, non-leaching food grade stainless steel, the Safe Starter is the next natural step in the evolution of the baby bottle.

Removal of materials by dissolving them away from solids is called leaching .

The leaching solvent irrigation is one of the very important part of heap leaching.

As a kind of mature technology, heap leaching has been widely used to leach low grade ore, but its theory research is no perfect.

The body's endocrine system may interpret this loss of calcium as serious enough to warrant leaching the mineral from bone.

In industrial leaching, solvent and solid are mixed, allowed to approach equilibrium, and the two phase are separated.

Recycling programs do not address the problem of electronics that are already leaching poison in landfills .

With a certain copper mine of Jiangxi as the object of study, the bacterial leaching tests are conducted.

Patterns stored in the paper is a thick paper products, through leaching or side coated coating made of embossed paper.

The mud in mineral is liable to be flocculated to porous or network constituent which adsorb dissolved gold, influencing gold leaching rate.

While in the optimum conditions of alkaline leaching, it is possible to extract 96% of silicon dioxide.

The leaching experiment is performed to determine desorption behavior of mercury influenced by the different factors of acid rain.

These reactions could be carried out in industrial-scale bioreactors, large leaching piles, or in situ underground.

analyzes the problem in bacteria leaching and solution; discusses the developing trend and foreground of this technical application.

In a proper range, increasing the additive dosage and calcination temperature could improve the leaching rate of Au and Ag.

In clinical applications, the coating protects the nanoparticles from leaching in an acidic environment.

The leaching technique for uranium ore is characterized by low consumption of energy and reagents, simple flow sheet and high productivity.

It has important significance to improving the leaching rate of uranium and the recovery rate of resources.

We examined in the regulating tank as well as in the stilling basin entire technical process trash leaching solution toxicity.

To improve the flow rate of well is of importance to in-situ leaching of uranium in low permeable deposits.

Here pre-flush is omitted, printing directly to the leaching of cylinder with a brush with linguistic terms.

The leaching rate of manganese can be raised by addition of small amount of reductive agent H.

The invention relates to a leaching method for alloy obtained by magnetic separation nickel-copper bessemer matte.

First, it has been studied for the process conditions and dynamics performance of leaching calcium molybdate with sodium solution.

The results of the experiments indicated that microwave could promote and strengthen acid leaching purification of diatomite ore.

Leachate A product or solution formed by leaching, especially a solution containing contaminants picked up through the leaching of soil.

The electrochemical oxidation of marmatite should not be neglected in the sulfuric acid leaching.

Twelve mines operate without environmental controls, leaching hexavalent chromium into drinking water supplies.

The invention relates to a technology for leaching silver from ores with ammonia free thiosulfate solution.

The kinetics of leaching vanadium from vanadium titanium magnetite tailings was also investigated.

The volumetric oxygen transfer coefficients in a batch leaching bioreactor are measured and discussed.

The research on the water leaching rate of bag tea of the root of kudzu vine and thin-layer chromatography is discussed.

It would appear that the inputs are insufficient to offset the mobilization and leaching of calcium from the topsoil.

Applying this model, fairly precise results of leaching rate and final acid concentration can be predicted.

Lateritization of the orebody is not complete and its ability of leaching Si and concentrating Fe, Al is very low.

Zheng for care on a regular basis, use a soft brush or dry clean soft cloth, wipe the piano body, must not water leaching.

Fertilizer N not taken up by plant roots is subject to microbial immobilization and losses by denitrification , volatilization and leaching.

the other is in the top roller, and the price of the golf have ink on silk too short or leaching you shui envirogluvtm.

The main factors which have influence on the volume of reactor are reactant concentration, the leaching ratio of aluminium o. . .

There is correlation between the electrical conductivity and mineralization degree of leaching solution.

These methods have the features that the speed of leaching gold is fast, furthermore, the environment polution is becoming little.

The technological key to leaching mining of underground polyhalite is the extraction of effective constitutes from polyhalite.

It is applied for leaching of ores or concentrates and for the precipitation of metals or oxides from leach solutions.

Results indicate that the proper control of the top smoke feed and the bottom leaching agent can make the fluidization stable.

It is a complex and systematic project to build a certain shape salt cavern by means of leaching.

Leaching process is a chemical reaction process, mineral particle size and concentration also have great impact on the leaching rate.

The leaching mechanism of niobium from a refractory niobium-tantalum ore by concentrated potassium hydroxide was studied.

The thermodynamic and equilibrium constant criterion of the silver leaching with cyanide is deduced.

Actually, twice repeatability leaching test inhibited iron and nickel leaching, but promoted cobalt leaching.

Results showed that TETA had certain effect on the leaching process. However, as the time went, its effect became weak.

The terminology of "leaching solution" used in the domain of in situ leaching of uranium is discussed in the view of scientific rationality.

High concentration copper sulfate solution was prepared by solvent extraction using leaching solution of low grade copper ore.

The effects of accompanying anions on Cu specific adsorption in soils were investigated using a constant flow leaching method.

Adding triethanolamine oleate to the solution can obviously inhibit the leaching of cobalt from cemented carbide.

The weight loss percentages after the weathering and leaching tests were observed to be lower than 10% for all wood samples.

The leaching process of the carotenoid (mainly lutein) from the sericulturist and the technology parameter are introduced in this paper.

The main theory of leaching neglects mechanisms for holding the materials on the solid.

Studies on leaching copper from tailings of flotation in Qinghai by common leaching method and coordination leaching method.

At this time behind her, a leaching blood bag is lying on the floor.

Concentration behavior of germanium during zinc smelting by hot sulphuric acid leaching iron vitriol precipitation has been analyzed.

The paper presents laboratory shaking leaching and column leaching experiments with the ore from Shou Wang Fen Copper Mine.

The effects of different measures on accumulation and leaching of soil nitrate nitrogen was studied in greenhouse in Shouguang.

In the paper, leaching & rime principle was analysed in-depth, also, influencing factors were studied synthetically.

Hydrogen peroxide and cyanide consumptions can be reduced with the similar gold leaching speed and recovery.

Leaching The removal of humus and soil nutrients in solution by water moving down the soil profile.

The leaching process is completed under automatic control, simple in process, convenient, rapid, and has great effect.

and leaching the leaching residue, removing impurities and filtering to obtain lead concentrate.

The leaching rate of Au and Ag was enhanced with the increasing of the roasting time.

Plant adsorbing, leaching and unavailability of heavy metals only depend on their reversible adsorption form.

And zinc smelting process including the wet burning-out, leaching, net liquid, electrolysis and casting process.

Methods: Apply for qualitative identify reaction and deal with leaching agent of ethanol.

The leaching characteristics of coal gangue in acid rain and water under the condition of static and dynamic state have been studied.

Using biology leaching for normal college students can train their modernized consciousness.

A process mineralogical study was thus made and it was founded that it is mainly realgar and orpiment that affect the gold leaching.

Using microwave radiation to pretreat exhausted catalyst can improve the ratio of zinc leaching obviously.

This paper discusses the ecological problems of uranium mining, particularly in-situ leaching (ISL) mines.

Theresults indicate that mechanical activation can increase the leaching rate of zinc effectively.

The new process of producing Zn powder by alkaline leaching and electrowinning is a reliable, cost-effective and flexible process.

The situational leaching is a new test in the ideological and political course, in higher educational institutions.

The paper studies the basic law of water transport by test when the copper is leaching under some volume of sprinkling.

Unless leaching occurs, nitrogen should not be applied after lay-by.

New research shows that some plastics may be leaching toxic chemicals into seawater.

In biological leaching studies, L. ferriphilum has been widely reported and is considered the major iron-oxidizing bacteria.

Laboratory research on chemical leaching and bioleaching of the stored ores in gob from Shouwangfen Copper Mine are conducted.

Leaching liquid (LL) treatment and control are key problems in design and management of urban refuse land filling yard.

The improvement of permeability is the key technological approach to resolve the hard leaching problem of low grade argillic gold.

and the bacteria existence environment and the crystal lattice structure can affect the silicon leaching effect.

Hot H2O is a super solvent, leaching flavors and oils out of the coffee bean.

Finally, based on introduction of heap leaching technology at home and abroad, research difficulties of heap leaching theory are emphasized.

It is obvious that more energy is required to carry out the leaching under high ratio.

The influence of treatment time, gas flow rate and bias voltage on the plasticizer leaching was investigated.

The methods of increasing leaching speed and factors of affecting bioleaching rate are discussed.

Remove of iron from sulfuric acid leaching solution of ferrochromium alloy by goethite is researched.

Among them, leaching of meteoric water has contributed less to the formation of anomalously high porosity zones compared to other factors.

The recession showed that economic power is leaching away from the West faster than was thought.

5 and finishing process control, washing condition, setting temperature, velocity, leaching of gadolinium, gum.

The rate of gold adsorption by carbon from leach liquor after cyanide leaching of roasted ores reached to 99. 91%.

The pressure and time which affect core leach are investigated and leaching technics was specified in this paper.

Soybean protein concentrate was prepared by alcohol leaching from high and low temperature meal.

The roasting and leaching behavior of spodumene in sulphuric acid process was investigated.

Long-term leaching experiments of fuel-scal cemented waste forms: Experiments and modeling.

Leaching mechanism of refractory gold concentrate in slurry electrolysis process has been studied.

Effects of different factors on the leaching of calcium from steel slag with acetic acid were investigated.

The pulp concentration has effect on the leaching rate of pyrrhotite and marmatite.

The effect of F-containing leaching agent on sulphuric acid leaching and extracting vanadium of vanadium mine in Shaanxi was investigated.

Recovery of cobalt and copper from nitric acid leaching solution of cemented carbide scrap was studied.

High efficiency of water application may result in energy savings and help avoid erosion and leaching nitrates from the soil.

The new technology of production of Zn powder by alkaline leaching and electrowinning is described.

The test of leaching rate on zinc sulfide concentrate in Shaanxi province with sulfuric acid, oxygen and catalyst has been taken.

Bioleaching has lower cost and environmental pollution, but leaching speed is slowly.

Rain water is leaching through the ground and the shells, dissolving out calcium carbonate and carrying to the stromatolites.

This paper made study on gold extraction by leaching plating sludge with acidic thiourea solution.

The prepared granule and dry suspension have excellent effects of masking bitter taste, raising excorporeal leaching rate, etc.

The application study on activation technology in heap leaching of uranium ore is described in this paper.

The carbonate of host bed aquifer has great influence on sandstone type uranium deposit of in-situ leaching.

Keep bottled water away from heat, which promotes leaching of chemicals.

The results show that the copper leaching recovery can increased by 10% or more by Using bacterium in leaching process.

These may provide some thermodynamic data for high-temperature oxidation pressure leaching of ores containing In2S3.

Soil with high leaching capacity could eliminate degradation by drainage.

WT The pilot test of stope leaching at an uranium deposit in the south of Jiangxi Province is briefly introduced.

Hydrolysis of titanium influences leaching rate greatly.

So it is necessary to discuss the influence of stope leaching uranium to the environment and treat "three wastes" .

Application, action principle and main inference factors of peroxide in the process of cyanide leaching Au are discussed.

Complete sets of leaching equipment, complete sets of oil refining equipment.

The leaching efficiency of copper smelter slag with high silicon is investigated in this study.

Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.

The test introduced mechanism of rich-oxygen leaching and application in Sifang Gold Mine.

Raman microspctrometric identification of corrosion product formed UO2 nuclear fuel during leaching experiments.

The tests of laboratory and plant indicate that it is efficient to replace inspissationwith second leaching.

A process technique has been cstab-fished of flotation-gravity separation, followed by removing magnesium from products acid leaching.

The dates from testing and production show that high pressure leaching is more attractive in both of technology and process.

According to the effect of intensified leaching on leaching rate, the predicted results can be revised tofu. . .

The first is the production of tea into the teapot of boiling water, timing one minute, then use the open water Hushen, called leaching pot.

Edible vegetable oil pressing and leaching of two kinds of production process, the state should be marked clearly.

Leaching of Vanadium from silicate-type vanadium ore has been research by roasting and leaching using acid.

The hydrochloric acid leaching for high-silicon bauxite is researched.

The control system in the well-fields of in-situ leaching is a Distributed Control System (DCS).

The most obvious cost of inaction is the leaching away of trust.

And, the sulfuric acid leaching of Zinc Oxide mineral was also studied.

The leaching rate of in place blasting fragmented ore is predicted using the gray system theory.

Avoid using harsh detergents that can break down the plastic and increase chemical leaching.

The latter, called leaching loss, is a problem only in sandy soils in high ra infall areas.

Heap leaching theory is actually applied at the low-grade gold deposits in this paper.

Hence, this cyanidation leaching process is recommended to treat this ore.

The leaching rate of tea polyphenols increased with the extention of brewing time and the elevation of temperature.

For all four against the roll for leaching to set whether they are running axially series.

The activities of urease of all the samples are lower with the time, and the trend is the same as the Leaching Less of Urea.

Tests for chemical properties of aggregates - Part 3 : preparation of eluates by leaching of aggregates.

The leaching conditions are established on the basis of the test.

Choose brown, wax-paper bags instead of plastic baggies to avoid adding to our landfills and leaching phthalates into your child's food.

The acids dissolve the uranium, and various other things, leaching them from the ash.

The gossan is formed by weathering and leaching of hydrothermal sulfide.

The leaching test also showed the weak leaching ability of heavy metal elements.

leaching Tu Tu leaching from wood screen painted furniture pieces of flat plate.

Advances in studies on accumulation and leaching of nitrate in farming soil.

Yearly input of heavy metal is larger than the sum of unavailable form, plant adsorbing and soil leaching.

It is more like a cup of strong wine sweet red wine, red earth leaching, leaching of red earth.

and it is subjected to later hot brine leaching and enrichment as well as supergene oxidation and reworking.

The influences of main factors on removing fluorine in the process of leaching phosphate ore were discussed.

Heavily acidic conditions also prompt the leaching of toxic metals into nearby bodies of water.

This study put to rest the unproven idea that softeners cause corrosion or the leaching of metals from water lines.

these thanks hold about 10000 tons of ore , leaching liquor is fed into each tank , held for several hours and drained out .

Using sulfuric acid leaching, the recovery of Cu from the solid waste was feasible.

The effect of leaching agent, ore grade and ore size on leaching are studied by shaking bottle and column leaching.

calcium peroxide serving as leaching aid can improve the cyanogenation rate and raise leaching rate.

However, the Chang 6 reservoir under the denudation plane were controlled by degree of leaching, and oils distributed in valley.

This leaching process concentrates these minerals as ore that can be mined.

From the point of view of bacteriology , the authors discuss the nature and mechanism of bacterial leaching of sulfide ores.

Astronomers have hypothesized that these stars may owe their youthful looks to leaching from their neighbors.

The solute transportation during heap leaching in fact is a kind of solute transportation in the saturated or unsaturated porous media.

Controlled the proper volume of sprinkling, ore-column can keep unsaturated long, which is benefit to leaching.

CALCINING AND LEACHING OF BARITE WITH DEPOSIT FORM AND HEAT LIQUID FORM.

Researches results on the direct cyanide gold leaching method showed that the gold leaching rate was only 80. 41%.

Leaching process of zinc roasting sand in production of electrolytic zinc has been improved.

leaching cylinder contains what I call ' special conditions ' gum because it not only contains glue.

And based on raw material structure, the leaching result has also did analysis discussion about the related influencing factor.

The roasting time and process temperature also play important roles in the roast processing and chromium leaching.

Moreover, Cr leaching percentage increases with increasing ratio of 5 of ratio of solid mass .

The study shows that two methods could effective reduce silica concentration and the leaching rate of silica.

The leaching efficiency of antimony is above 98% when chlorine dosage is 90% of the ore in weight.

The velocity and desorption extent of mercury are enhanced with the increase of leaching time and quantity.

Is microbe leaching method feasible for pyrite?

Leaching was lowered markedly after the first reuse and almost stopped after the second cycle.

The evolution tore structure in in-situ leaching is a complex kinetic process, which is correlatively affected by many factors.

the EDTA content of leaching solution is another sort.

Leaching leads to the formation of podzolized and lateritic soils.

However, based on the real content of kaolinite in Xianyou kaolin revealed by approximate analysis, the real maximum leaching conte.

Right now it is also leaching into the more mainstream American political world.

leaching paint coating, paint.

The way to calculate the volume of reactor is studied on the basis of the acid leaching kinetics.

The former with low Ni content and high Fe content which is suitable to high pressure acid leaching.

The results indicate that satisfactory tellurium leaching rate can not be obtained by conventional acid leaching processes.

So, too, were1, 610 factories now leaching poisons, pollutants and debris into the waters.

Bio-oxidation could liberate gold enclosed by sulfides, such as pyrite, arsenopyrite, etc. to allow the ores treated by heap-leaching.

Under the optimum technological conditions, the leaching efficiencies of Mn and Ag are over 99% and 95% respectively.

The correlation coefficient between total ammonia volatilization and N leaching rate was 0. 903.

The stability of the red pigment in litchi shell, which was extracted by acidic solution leaching from litchi shell, was studied.

Moreoften , ore is crushed to about 6mm and leached in large concrete thanks by percolation leaching .

Valuable metals such as lead and silver enriches in leaching slag, which is sent to lead smelting factory to be dealt with.

Insitu leaching mining of deeply buried polyhalite can alleviate severe shortages of potash resources in China.

The laboratory shaking leaching and column leaching tests on the ore from Shouwangfen Copper Mine were carried out.

It can be seen that low concentration of ammonia can promote the bacteria leaching.

The results show that the leaching rate under those conditions can reach 88. 1%.

crystal Lys, Met were coated with hardened lipid or gelatin, and the leaching loss in the water were 57%, 14.

The strain performs well in the bioleaching of phosphate ore, and the leaching rate reaches 23. 13%.

Countering this problem, the commercial scale trail of oxygen rich leaching of peroxyl was carried out.

leaching too much tannin and theophylline , a bitter taste, and thus a loss of some nutrients.

A model GM(1, 1) for heap leaching rate was established by applying the theoretical principles and modelling process of grey sytem theory.

The problems of water pollution and lake eutrophication which is caused by phosphorus leaching are quiet serious.

The leaching degree of Ndeepened and NO3--Ncontent in soil was increased gradually along with the increment of Nfertilization amount.

The leaching process of cobalt from waste hard-alloy by use of phosphoric acid and ozogen is introduced.

It showed from the study that a better leaching index can be achieved by adopting this process to treat such kind gold ores.

The leaching process of electricity catalysis zinc sulfide concentrate in FeCl_3-HCl-CaCl_2 system has been studied.

This is largely because of reductions in fertiliser use and the amount of nitrogen leaching from manure.

Kathy has been leaching her how to ride a horse and she has learnt to drive a tractor.

The leaching ability of coal gaugue in acid rain is better than that in Water.

Discussion on the cause of low silver leaching rate taken place in gold and silver cyanide leaching and ways to increase it

Dual cell system is introduced to study the leaching process.

Operation practice of improving cyanide leaching rate of gold concentrate by means of selective flocculation to remove slime

Experimental study of bacteria pre-oxidation and heap-leaching of a medium-sulphur copper-bearing gold ore wrapped by sulphide

Study of the technological conditions for the preparation of magnesium hydroxide from the sulfuric acid leaching filtrate of serpentine

Investigation of the Roasting-cyanidation-leaching Technology for an Arsenic-containing Gold Concentrate

An Experimental Study of Migration Characteristics and Conditions of Uranium during the In-situ Leaching Process

Commentary on Development of Direct Extraction Technology Used for Leaching of Low-grade Copper Resources

Pre-desiliconization of a Bauxite Ore through Leaching by High Concentration NaOH Solution under Atmospheric Pressure

The Running and Discussing of a Adsorbing-and-washing Equipment in a Certain Leaching Mine

Study of nitrate leaching potential from agricultural land in Northern China under long-term fertilization conditions

Sodium Carbonate Solution Leaching Separation-Ultraviolet Fluorescence Spectrometric Determination of Trace Uranium in Geological Samples

The results show that in pure ammonia leaching test, copper leaching grows slowly with the ammonia increased to a higher concentration;

Study of A Porosity Evolution Model of Ore-rock Granular Medium for Heap Leaching

Characterization of waste - Methodology for the determination of the leaching behaviour of waste under specified conditions

Industrial Experiment on Copper Extracting from Copper Sulphide Ore by Microbiological Leaching-Solvent Extraction-Electrodepositing Process

Analysis on the affecting factors of leaching for nutrient content in Lonicera japonica and optimization of its procession parameters

Ore Leaching Bacterin Commonly Used in Biological Metallurgy and Basic Methods of Their Culture Improvement

Study on Extracting Vanadium from Pan zhihua Refined - ore Melted Residue by Means of Leaching Method