The result indicated that the net output value increase of 11 main plants during "7·5" added up to 9450 million yuan. The price had the most effect on the net output value in all of the factors.

Through preconcentration, there is an great increase of the net value of the resources over the flotation process with no preconcentration, and the ratio of profit to output value increases from 9.

The adoption of this new technology not only increases methanol output and catalyst utilization ratio, but, also stabilizes ammonia synthesis operation and increases the net ammonia value.