Production practice, the flotation process of renovating and many scientific research achievements, the effect is obvious. Floating stage grinding process, the heavy - float joint process, etc., is the main trend of development of flotation technology in China. Use heavy - floating joint process, such as xiangxi gold mine of stage grinding stage, don't get a good indicators, improve the recovery of over 6%; Jiaojia gold mine, wulong gold mine, valley, east into gold also have certain effect. And as xincheng gold mine, the original process for ore flotation directly, because the mud is higher (high mud ore itself, plus mining backfilling cementation filling strength is not enough, part into mud) continuous decline in the index of mineral processing. Through manganese beneficiation plant examination test, used the mud separation process, using the cyclone static micro-bubble flotation column floatation slime, recovery rate from 93.05% to 95.01%, concentrate grade 135 g to 140 g/t/t, stable production. Gold factory valley gold dropped year by year because of the ore grade, thus reduce the index of flotation, the cooperation with shenyang portable gold ore sieve institute experimental study adopted branch flotation process, improve the grade of the flotation index and concentrate. This research (in January 1988 portable gold ore sieve corporation passed the technical appraisal), got the new enlightenment for flotation process modification. Flotation method and other methods, of course, is not everything, can't be effective for all gold ore, the main consideration ore properties, in the selection process, various arguments and the experiment was carried out.
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. Low grade coltan ore processing oxidized ore heap leaching process, in dandong wuhushan mine after the success of the experiment, one after another in henan, hebei, liaoning, yunnan, hubei, Inner Mongolia, heilongjiang, jilin, shaanxi and other provinces and regions, the economic effect is obvious, for the development and utilization of low grade oxidized ore has paved the way. According to incomplete statistics, the use of portable gold ore heap leaching method screening the annual output reached more than two thousand (only gold ore heap leaching production in henan province portable screen 1.3 two thousand), but compared with developed countries, our country heap leaching on a smaller scale, the general is 1 x 103 ~ 3 x 103 t/heap, wan t/heap is less, also there is a big gap on technology, shaanxi taibai county tin beneficiation plant in 1988 king double gold heap leaching production, large capacity of gratifying achievements (ore grade is 1.5 g/t).