Channeling can be prevented by adding spongeiron and synthetic rubber powder in cement slurry.
提出消除微裂缝-微环隙的防窜措施，是在固井水泥浆中添加海绵铁及合成橡胶粉。
2
The company's main: gold card various kinds of specifications, a return to powder, second powder, spongeiron.
本公司主营：金粉牌各种规格一次还原铁粉、二次粉、海绵铁。
3
Using spongeiron reduced by iron ore concentrate powder as raw material, the smelting process of pure iron is investigated through non vacuum induction furnace and vacuum induction furnace.