Experimental Study Of High Mud Oxidized Copper Leach Extraction

Copper oxide ore of the most important part of the copper resources, in the national economic development process? high grade copper oxide and sulfide copper ore reserves has chosen to decline, Low grade copper resources willbecome the important raw material for copper smelting, how to economic and effective use of copper resources has become an important research subject. For domestic and foreign copper resources and its separation methods are the relatively detailed summary, also briefly discusses the progress of copper extractants. Based on the optimization of the copper leaching conditions so as to increase the leaching rate of copper, copper extraction concentrate of flocculating sedimentation test, choose the price low effect good flocculation agent for leaching pulp for settlement, and greatly reduce the production cost of the enterprise.Test the core sample on the spectrum, element and copper content phase analysis, confirmed the mineral elements content. In the leaching test part, usingan atmospheric mixing acid leaching method, the copper for enrichment. Leaching test to acidity, the leaching time, pulp density, feed particle size and so on more than the group concluded that the conditions the optimalleaching process conditions for leaching conditions forthe concentration of the sulfuric acid90g/L, pulp concentration35%, immersion time4hours, immersion feed particle size-200mesh60%, leaching slag washing twice, copper dip rate was81.43%. For copper leaching liquid on the extraction condition test, including extraction agent type selectionfeed liquid pH value testthe extracting agent concentration testcompared with testmixing time testextraction series test and so on, came to the optimal extraction results were N902as extraction agent, extraction conditions for:feed liquid pH1.5, extraction agent concentration10%, compared to the extraction (O/A)1:0.8, organic facies of feed liquid mixing time3minutes, secondary extraction, copper extraction rate reached98.25%, iron extraction rate was3.19%, the rate of extraction of manganese is1.78%.The field production of production cost consideration, Leaching liquid of settlement is in settling basin, if Let its natural sedimentation, the sedimentation rate is very slow, in order to speed up the settling velocity of this test is also carried out flocculating agent accelerated sedimentation experiment research. Based on a variety of flocculating agent choice, including inorganic flocculants such as poly iron, poly aluminum, etc., organic polymer flocculant polyacrylamide, starch, FH-2,939C of the contrast test, in line with lower flocculating agent cost principle, so choose FH-2as flocculating agent already economy at the same time settling effect and good.The test of the test conditions easy to control, the operation is relatively simple, in the choice of equipment for low, at the same time in extraction agent and flocculating agent on the choice of recognition is the market of the common agent, in field production is easy to be applied in reduced the production cost and at the same time, improve the production efficiency.