Preparation and application of novel phosphorite selective collecting agent

The invention discloses preparation and application of a novel phosphorite selective collecting agent, and belongs to the technical field of collophanite flotation. The collophanite low-temperature reverse flotation collecting agent is prepared from the following raw materials: phenol and glycine. According to the method, phenol and glycine react to generate a collophanite selective agent with COOH and NH groups, compared with an oleic acid collecting agent, the agent can be preferentially adsorbed on the surface of dolomite and floats the dolomite, the collecting capacity for apatite is very weak, the dosage of a sulfuric acid inhibitor can be reduced by 30-50%, and the grade and the recovery rate of P2O5 in apatite concentrate are both remarkably improved. By means of the collecting agent, dolomite flotation can be achieved within the pH range of 5-6, the foam flowability is high, and operation is easy. 本发明公开了一种新型磷矿选择性捕收剂的制备及应用，属于胶磷矿浮选技术领域。本发明胶磷矿低温反浮选捕收剂包括下述原料制备而成：包括苯酚和甘氨酸。本发明通过苯酚和甘氨酸反应生成COOH、NH基团的胶磷矿选择性药剂，