Patent ID: 8518466

Claim:
A method for preparation of selenium covered basic copper chloride, comprising steps of: (a) mixing crystalline basic copper chloride (TBCC), water and stabilizer in a reactor to form a first mixture; (b) adding and stirring sodium hydroxide solution into said first mixture for 10 to 100 minutes of reaction time, wherein hydroxyl-modified crystalline basic copper chloride is obtained after discharging, rinsing, and negative pressure suction filtration; (c) adding said hydroxyl-modified crystalline basic copper chloride and water in said reactor to form a second mixture; (d) adding and stirring selenous acid into said second mixture for 10 to 100 minutes of reaction time to form a third mixture; and (e) adding copper sulfate pentahydrate in said third mixture for reaction, wherein selenium covered basic copper chloride comprising crystalline basic copper chloride, basic cuprous selenide, and basic cupric sulfate is obtained after discharging, rinsing, and negative pressure suction filtration.