All slime cyanidation leaching gold technology is increasingly applied, successively in jilin, hebei, henan, shaanxi, Inner Mongolia and other places adopted factory of gold. At the same time, to solve the argillaceous oxidized chrome washing machine ore in dense filtration solid-liquid separation difficulties, in November 1979, changchun institute of portable gold ore sieve to unite the gold mine ore carbon paste without filtering method is used to carry gold craft, the last two years of experimental research, a success. On this basis, in August 1984 in henan spirit lake gold designed by using the domestic equipment to build China's first day processing 50 t ore leaching gold of all-sliming plant. Cyanidation leaching gold technology in China to make a big step forward. Coal slurry process become argillaceous gold oxidation ore rock gold mine is one of the important methods of real estate gold. Since in jilin, henan, Inner Mongolia, shaanxi and other places built gold of all-sliming factory. Late 1984, the ministry of metallurgical industry of gold CIP machine the portable gold ore sieve bureau to promote the application in our country's process of leaching gold of all-sliming, absorb foreign advanced technology and equipment, David mackay company cooperation with the United States, west meiyukou Tong gold mine in shaanxi province, hebei zhangjiakou gold deposit, ore processing 250 t respectively built a day (west meiyukou Tong) and a 450 t (zhangjiakou) carbon leaching gold plant. According to the survey of zhangjiakou gold mine of 93.54% (carbon slurry recovery was 1988. 90.25%) of recovery.
On the basis of experimental research on the science to technology innovation, make our country a portable gold ore screen production technical level has improved greatly. As gold factory located gold deposit by using zinc powder instead of zinc wire replacement gold mud is successful, the replacement rate of 99.89%, gold gold grade is obviously improved and zinc consumption of the original zinc wire displacement of 2.2 kg to 0.6 kg/t/t, the production cost greatly reduced. Then in zhaoyuan, jiaojia, new city, wulong mine application have also made obvious effect. The introduction of foreign advanced technology and equipment to digest (such as highly effective thickener in the United States, the double helix mixing leaching tank, Japan's Mars pumps, belt type filter press, etc.), the portable trommel gold production in China in the equipment level and technical level has further improved, but also promoted the portable gold ore screen production equipment in our country to develop in Carbon in Pulp the direction of high efficiency, energy saving, large-scale, automation. In thiourea leaching gold and thiosulfate leaching gold, preoxidation bacterial leaching, pressurized leaching, catalytic resin adsorption, etc. New technology of science research. Changchun institute of portable gold ore screening 1979 thiourea leaching gold experiment was carried out to be successful, and in 1984 in guangxi build up a day dragon water ore flotation gold concentrate containing 10 ~ 20 t thiourea leaching gold workshop by ministerial appraisal (1987). Although other processes in the experimental research stage and is preparing to plant put into production, to explain China's gold technology has developed to a new level.