One-step reverse flotation of collophane with phosphate ester anionic collector synergized with coconut oil diamine
The medium and low-grade silica-calcium collophane in the Yichang Shukongping mining area is taken as the object,using coconut oil diamine as the cationic collector,the synergistic reverse flotation performance of phosphate ester anionic collector with different structures is investigated.The results show that:The synergistic effect of phosphate esters with different structures is different,the synergistic effect of phosphate esters with polyoxyethylene ether groups is better than that of phosphate esters without polyoxyethylene ether groups;Different carbon chain structures of phosphate esters with polyoxyethylene ether groups have different synergistic effects;The synergistic effect of branched alkyl alcohol polyoxyethylene ether phosphate is superior to that of straight-chain alkyl alcohol polyoxyethylene ether phosphate.Using phosphate ester E1310P and coconut oil diamine as anionic and cationic collectors,the P2O5 grade of phosphate rock can be increased from 25.74%to 33.66%by reverse flotation.
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