, where n, k and m denote the number of radicals per molecule, where n equals an integer from 1 to 5; k equals an integer from 0 to 4; m equals an integer from 0 to 10. The method of producing compounds of formula (1) involves adding a sodium hydride solution to fluorinated alcohol with defined number n, k and m in a current of argon and ethylene chlorohydrin. The mixture is heated on an oil bath under a vacuum. The fraction of oxyalkylated fluorinated alcohol is distilled, to which water and potassium hydroxide is then added. After dissolution of potassium hydroxide, carbon disulphide is added at temperature not higher than 30°C. The end product is extracted. A method for floatation benefication of sulphide ore is also disclosed. The method involves crushing sulphide ore in an aqueous medium to form pulp. The pulp is conditioned with a foaming agent and a compound of formula (1), taken in amount of 25-150 g per ton of crushed material. Floatation is carried out with extraction of sulphides into the foamed product.;EFFECT: more complete utilisation of sulphide ore owing to higher intensity of the floatation process while using fluorinated potassium xanthogenates, higher intensity of the floatation process for copper and nickel minerals when processing Cu-Ni ore.;4 cl, 7 dwg, 4 tbl, 2 ex"/>
公开/公告号RU2454404C2
专利类型
公开/公告日2012-06-27
原文格式PDF
申请/专利号RU20100121803
发明设计人 ROSTOVTSEV VIKTOR IVANOVICH;KONDRATEV SERGEJ ALEKSANDROVICH;MUKHA SVETLANA ALEKSEEVNA;KARGAPOLOV JURIJ SERGEEVICH;
申请日2010-05-28
分类号C07C327/00;B03D1/02;
国家 RU
入库时间 2022-08-21 17:06:04