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wholesale accessory jewelry The impurities in the gold are not burned. It is necessary to use purity technology to purify the gold.
The method of losing the king water -soluble gold is relatively stupid. Except for a small number of special circumstances in the industry, it is generally not the case. I will introduce two methods for you: 1. The golden solution is matched with cyanide to ensure that only the gold can be peeled into the solution; then the zinc tablet is willing, the acid exfoliating, and the gold dregs fire method is pure. This method is fast and the deposit can be recovered by more than 99%. The golden solution is actually an oxidant. Ordinary nitrobene substances and some additives are used, but now there are nitrate nitrate, but it is only the technical secret of others. 2. The three -valent iron dilute sulfuric acid sulfur, this method is slow, and only about 80%of the recovery rate at a time, but it is better than safe. If you are already dissolved in the king water, remember not to use iron, zinc, aluminum, etc., so you have to react the acid first! And the golden degree is low. The professional method is to slowly add sodium sodium sodium sulfate (more than 200 mesh) to restore, stir, and the sponge -like dark red gold powder is generated, and then the sparse polyacrylamide liquid flocculation is added. , Filter, and then boil, get more than 99%of the goldenness. Zinc is a kind of blue and white metal. The density is 7.14 grams/cubic centimeter, and the melting point is 419.5 ° C. At room temperature, sex is more crispy; at 100 to 150 ° C, it becomes soft; after more than 200 ° C, it becomes brittle. The chemical properties of zinc are lively. In the air at room temperature, a thin layer of thin and dense alkaline -type zinc carbonate film is generated on the surface, which can prevent further oxidation. When the temperature reaches 225 ° C, zinc oxidation is fierce. When burning, blue -green flames are emitted. Zinc is easily dissolved in acid, and it is also easy to replace gold, silver, copper, etc. from the solution. 2. Cyanide gold -lifting process Cyanide method is the main method of extracting gold from ore or concentrate. The cyanide gold -lifting process includes: cyanide immersion, washing filtration and filtration of mowing pulp, the extraction of gold in the golden liquid or cyanide plasma, and the smelting of the finished product. The existing cyanide plants in my country's gold mine basically adopt two types of gold bistlasty processes. One is to continuously washing with thick machines for continuous reflux washing. French), the other is that there is no need to be filtered and washed, and the activated carbon -free cyanide carbon pulp process (CIP method and CIL method) are used directly from the cyanide slurry. There are two types of conventional cyanide gold -lifting process according to the different processing materials: one is to treat the cyanide plant that treats flotal gold concentrates or treats mercury hybridization and re -select tailings. Most of this process is large state -owned mines. Such as Hebei Golden Factory; Liaoning Wulong, Henan Yangzhaiyu; Shandong Zhaoyuan, Xincheng, Jiaojia, Sanshan Island Gold Mine. The other is to deal with mud oxidative ore and use all mud -mixed cyanide gold -bistla. Such as Jilin Trench; Heilongjiang Unity Ditch; Anhui Xinqiao Gold and Silver Mine and other mines. my country has begun to use cyanide gold lifting technology as early as the 1930s. In the period of 1936 to 1938, Taiwan's Jintou Stone Gold Mine used cyanide-zinc powder replacement technology to extract gold, with an annual output of 150,000 gold. After entering the 1960s, in order to adapt to the development of the national economy and vigorously develop the production of mineral gold, in some mines adopted intermittent mechanical mixing cyanide gold -lifting technology and continuous mixing cyanide gold lifting technology to replace the osmotic cyanide method Gold withdrawal process. In 1967, first achieved the production of continuous mechanical mixing cyanide process in Lingshan and Linglong selection factory in Shandong Zhaoyuan Gold Mine. The cyanide method increased from 70%to 93.23%. The major gold mines across the country have been promoted rapidly. In 1970, the Golden Factory Yinjin Mine and the cyanide plant in 1977 were completed and put into operation. Since then, a number of mechanical mixing cyanide plants have been completed in China. The continuous development of gold production and the rapid development of gold ore resources have increased in large amounts of gold -oxidized ore with high mud oxidized ore since the 1980s. Gold Mine Construction of a daily treatment of 500T ore cyanide plant was put into production in 1983. From then on, the golden cyanide gold biscuity technology has been promoted and applied, and this method has been adopted in Henan, Jilin, Hebei, Shaanxi, Inner Mongolia and other places. At the same time, in order to solve the difficulty of the separation of mud oxidative ore in the separation of dense filtration solid fluid, in November 1979, Changchun Gold Research Institute began to use the filterless carbon pulp's gold -lifting process for the ore of the united groove gold ore. The two -year trial research was successful. On this basis, in August 1984, it was designed to use domestic equipment to build the first daily carbon slurry method for the daily processing of 50T ore. Make our country's cyanide gold lifting process a big step forward. The carbon slurry method has become one of the important methods of the rock gold mine that treats mud oxidation ore for real estate gold. Since then, the charcoal slurry method has been established in Jilin, Henan, Inner Mongolia, Shaanxi and other places. At the end of 1984, the Golden Bureau of the Ministry of Metallurgy Industry In order to promote the application of charcoal pulp method in my country, transplanted and digested advanced foreign technology and equipment, and cooperated with David Maiki, the United States, in the West Tong Gold Mine in Shaanxi Province, Zhangjiakou, Hebei Province, Hebei Province Gold ore built a daily treatment of 250T (Xiyu) and a 450T (Zhangjiakou) charcoal gold gold factory. According to the recovery rate of 93.54%(1988 carbon pulp recycling rate in 1988), Zhangjiakou Gold Mine was recovered. According to the experimental research of science and technology innovation, the level of gold production technology in my country has greatly improved. For example, the research of Jinchang Yijin Mine was successfully replaced with zinc powder instead of gold mud, making the replacement rate reaches 99.89%. The gold mud containing the gold product significantly increased, and the zinc consumption was reduced from 2.2kg/t replaced by the original zinc wire to 0.6kg/T replaced. The production cost is greatly reduced. Then the promotion and application of mines such as Zhaoyuan, Jiaojia, Xincheng, Wulong, etc. also achieved significant results. The low -quality oxidation ore pile -immersed process, after the Dandong Hushan Gold Mine was successful, successively promoted and applied in Henan, Hebei, Liaoning, Yunnan, Hubei, Inner Mongolia, Heilongjiang, Jilin, Shaanxi and other provinces. The development and utilization of taste oxidation ore opened up the road. According to incomplete statistics, the annual output of gold produced by piles in my country has reached more than two or more (the cumulative gold produced in Henan Province alone is 13,000), but compared with developed countries, my country's piles are smaller. Generally, it is 1 × 103 ~ 3 × 103T/heap. There are fewer 10,000 T/heaps. There is also a large gap in technical technology. The results (ore taste 1.5g/t). The introduction of advanced foreign technology and equipment (such as high -efficiency and thick machines in the United States, dual spiral stirring and immersion grooves, Japanese Mars pumps, band filters, etc.), which has made my country's gold production further in terms of equipment level and technical level. The improvement also promoted the development of my country's gold production equipment towards high efficiency, energy saving, large -scale, and automated direction. In the scientific research on new processes such as sulfurbin gold, sulfate sulfate gold, pre -oxide bacteria immersion, pressurized catalytic immersion, resin adsorption and other new processes, new progress has been made in recent years. In 1979, the Changchun Gold Research Institute conducted a successful sulfur gold biscuity test, and in 1984, a daily daily treated gold concentrate gold -sulfur cash biscuity workshop was built in Longshui Mine in Guangxi (passed ministerial appraisal in 1987) Essence Although other processes are in the experimental research stage and are preparing to build a factory to put into operation, it is enough to show that my country's gold withdrawal technology has developed to a new level.
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