This method essentially using a hydrolyzable bismuth oxychloride, bismuth oxide complexes hydrolysis in a weakly acidic solution, generating a white precipitate bismuth oxychloride, bismuth oxychloride concentrate preparation. In order to complete the hydrolysis, the pH value of the solution is generally controlled at 2, which requires a large amount of water to dilute the solution, resulting in high acid consumption, high water consumption, large reagent consumption, low recovery rate of hydrazine, and large discharge of wastewater. A small smelting smelter used this method to produce chlorinated bismuth concentrate, but the effect is not satisfactory. The technical and economic indicators are: 800kg of hydrochloric acid per ton of concentrate consumption, and the recovery rate of strontium is 60% to 70%. Plastic Machining, Machining Of Plastic, Plastic For Machining, Plastic CNC, Plastic Precision, Plastic Part, CNC Plastic Machining Shenzhen SCZY Technology Co.,Ltd , https://www.sczyltd.com