-
公开(公告)号:US4511463A
公开(公告)日:1985-04-16
申请号:US965394
申请日:1978-12-01
申请人: Edward N. Alexander , Richard Smith
发明人: Edward N. Alexander , Richard Smith
CPC分类号: B03D1/021 , B03D1/008 , B03D2203/06
摘要: Phosphate ore is concentrated by flotation in the presence of a half-ester of an organic dicarboxylic acid, such as maleic acid, with a saturated aliphatic alcohol containing at least 11 carbon atoms. Water and oil also are present. The half-ester may be partly neutralized, e.g. with caustic soda, in an amount at most sufficient to raise the pH to 7.0.
摘要翻译: 存在有机二羧酸(如马来酸)的半酯与含有至少11个碳原子的饱和脂族醇的情况下,通过浮选浓缩磷酸盐矿石。 水和油也存在。 半酯可以部分中和,例如, 用苛性钠,其量至多足以使pH升至7.0。