Application No. / Patent No.: 94111476
The invention as a mixture of copper and copper oxide ore processing to extract the copper method, after the copper ore after

crushing mixed with ammonium carbonate, ammonium chloride and ammonium sulfate, soaked in ammonia, and finally adding

precipitant to oxidation copper precipitation. The low-cost raw materials used in the invention easy to purchase, and can

recycling, operation is easy observation of control and copper leaching rate, almost 100%, energy consumption little, and no

pollution of the environment, greatly enhanced the state-owned copper ore resources utilization promising.
Application Date: October 28, 1994
Open Date: May 1, 1996
Authorized the announcement date: February 26, 1997
The applicant / patentee: HE Red
Applicant Address: Nanjing, Jiangsu Province, No. 16 Cliff Road
Inventor Design by: HE Red
Patent Agent: Nanjing knowledge of law firm
Agent: Wei-Zhong Ke
Patent Type: Patent
Key words: C22B3/14