Silver mining machine

True silver transformer and true silver ingot

1. Different properties: silver ore is proced from the ore containing main metal silver and other metal impurities by manual or mechanical mining. Silver ingot is the silver melted and cast into ingot

3. Different colors: the color of silver is white, moist and steady, there is golden color in the pores of silver ingot, and the color of silver ingot itself is snow white. Silver ore is one by one

extended data:

precautions:

1. When the silver minerals are mainly argentite and natural silver, flotation and cyanidation can be used; But when the ore contains a large amount of dark red silver, light red silver, selenite and other difficult cyanide minerals, it can only be flotation. The recovery of flotation is different from that of cyanidation. Generally, the recovery of cyanidation is higher

There are more than 200 kinds of silver minerals, among which there are more than 60 kinds of silver minerals and silver minerals with silver as the main element, but they have important economic value. As the main raw materials of silver proction, there are 12 kinds: natural silver (Ag), silver gold (AGAU), argentite (Ag2S), deep red silver (ag3sbs3), deep red silver (ag3ass3), hornblende (AgCl), brittle silver (ag2sbs3), silver (ag2sbs3) Silver antimony (ag3sb), silver selenite (ag3se), silver tellurite (ag2te), zinc antimony galena (5ag2sb2s3) and sulfur antimony copper silver ore (8 (AgCu) ssb2s3)
Silver belongs to copper type ion, which is sulfophilic and has strong polarization ability. In nature, it often exists in the form of natural silver, sulfide and sulfur salt. Because of its large ion radius, it can form selenide and telluride with huge anions Se and te. But it usually likes to hide in galena, either for mechanical mixing or for isomorphic crystalloid. Secondly, it occurs in natural gold, tetrahedrite, chalrite, sphalerite and other minerals. Therefore, silver can be recovered in the mining and smelting of lead-zinc, copper and gold mines
ring the endogenesis, silver tends to be highly concentrated in the hydrothermal stage and enriched into silver (gold) or various silver bearing polymetallic sulfide deposits; Under the supergene condition, the silver sulfide can form ag2so4 which is soluble in water and forms secondary rich aggregate in the lower part of oxidation zone; During sedimentation, silver often migrates with copper, gold, uranium, lead, zinc or vanadium, phosphorus, etc., and precipitates in sandstone, clay shale and carbonate rocks. When they reach a certain degree of enrichment, sedimentary or stratabound silver deposits can be formed; In the process of metamorphism, the fine dispersed silver in the protolith can be enriched to form a new deposit with economic value under appropriate geological conditions by extraction and activation of metamorphic hydrothermal solution
there are many kinds of silver minerals or silver bearing minerals in nature, and they can be formed in different geological stages. Therefore, these silver minerals are often distributed in different ore phases, and even several kinds of silver minerals occur in the same ore. they exist independently as coarse-grained single crystals and are embedded in Gangue minerals, as well as galena, sphalerite, pyrite, etc Chalrite and other minerals appear as fine continuous crystals, and some occur in the above minerals in a dispersed state. The distribution of silver minerals brings some difficulties to the design of ideal beneficiation process. Therefore, it is of great significance to study the technology of silver minerals and associated minerals for the optimal recovery of silver
for a long time, a large amount of silver with high purity has been used to make silver coins and ornaments. With the development of science and technology, silver has graally transferred from the traditional consumption of currency and jewelry crafts to the application and development of instrial technology
1. Film and television and photographic instry
in film and television and photographic instry, silver nitrate, the halide of silver (silver bromide, silver chloride and silver iodide), is particularly sensitive to light, so it can be used to make black-and-white and color films, negative films, sun drying and printing paper, and photographic films for printing and plate making. X-ray film for medical and instrial flaw detection and various special photosensitive materials for aerial surveying and mapping, astronomical and cosmological exploration and national defense scientific research< In other instries, silver is mainly used as electrical contact material, resistance material, solder, temperature measuring material and thick film slurry in the form of pure metal and silver alloy. Such as silver copper, silver cadmium, silver nickel and other alloys made of electrical contacts, can eliminate the consumption of general metal deformation, contact resistance and bonding and other defects; Low voltage power switches, lifting switches, heavy-ty relays and electrical contact materials made of silver tungsten, silver molybdenum and silver ferroalloy can be widely used in advanced instries such as transportation, metallurgy, automation and aerospace; In the thick film process, silver paste was used first, with the best conctivity and strong adhesion to ceramics. In petrochemical instry, Ag / Al2O3, kbr-ag-al2o3, Au Ag mesh and other catalysts are mainly used in chemical reactions
silver gold, silver mercury and silver tin alloy are important dental materials in medical and health services; Yinbodan and zhenxinwan have the functions of calming the mind, nourishing the mind and calming the internal organs; Silver gauze and cotton can cure malignant ulcer; Silver thread and silver piece are very important materials for fixing broken bones and repairing skull holes. Silver salt has good bactericidal effect. Silver vessels have special functions
in agrometeorology, silver iodide is used for artificial rainfall. In terms of energy utilization, silver coated on the huge curved glass mirror can gather sunlight and convert it into heat and electricity. Silver zinc and silver cadmium batteries are more than 20 times stronger than ordinary batteries. In addition, silver coated glass windows can prevent ultraviolet rays from passing through, which can save energy consumption and cost of air conditioning equipment. Before the 1980s, there were few independent silver deposits in China, most of which were associated (coexisting) components of non-ferrous base metal deposits. When the main mineral was explored, the evaluation was carried out along the belt, and the calculated reserves were given when the silver content was greater than 5 ~ 10g / T. If the beneficiation and metallurgy performance of silver is better, it is sometimes reced to 1g / T in copper and gold ores and 2G / T in lead-zinc ores
with the development of national economic construction, the geological work of silver deposits has been strengthened. Since the 1980s, a number of silver based deposits have been found. According to the current technical and economic conditions, the instrial indexes and regulations of silver deposits are as follows: the cut-off grade is a40 ~ 50g / t, the instrial grade is AG100 ~ 120g / T, the average grade is ag140 ~ 150g / T, the minable thickness is 0.8 ~ 1m, and the thickness of interbedding and coating is ≥ 2 ~ 4m. The geological work of silver deposits in China began at the beginning of this century after the establishment of the Geological Survey Institute, and the complete set of mineral processing equipment for silver deposits in intercepting gold mines
up to 1949, only a dozen lead-zinc mining areas (such as Shuikoushan, Chaihe, Lancang, etc.) with high silver content in China had carried out shallow silver reserves estimation. After the founding of the people's Republic of China, a comprehensive evaluation of associated silver deposits was carried out in the 1950s, while large-scale exploration of non-ferrous metal deposits was carried out. In the late 1960s, geological survey and scientific research of independent silver deposits were graally strengthened. By the end of 1970s, seven large and medium-sized silver deposits (Shilipu, Shandong, Yinkengshan, Zhejiang, Yindonggou, Hubei, Yindongzi, Shaanxi, Poshan, PANGXIDONG, Guangdong and Jinshan, Guangxi) had been converted into instrial evaluation after exploration. In the past 40 years, China's silver mining instry has developed rapidly. Instrial silver deposits have been found in 26 provinces, cities and districts in China. More than 200 mines and smelting enterprises have been built to proce and comprehensively recover silver. By the end of 1996, 569 silver mining areas have been identified in China, which are distributed in 27 provinces, cities and autonomous regions. The reserve of silver reaches 116516 tons, of which 23.6% is grade A + B + C, accounting for 27519 tons. Compared with 1985, the reserve of silver has doubled
the proven silver reserves in China are divided into two parts, one is the silver reserves with independent mining value when the silver grade reaches the instrial index, and the other is the associated silver reserves with comprehensive recovery along with the mining of main elements when the silver grade is lower than the instrial index. Since the 1980s, silver reserves have increased rapidly, from 18.4% in 1985 to 42% in 1995; The reserves of associated silver ore increase relatively slowly
according to the report of mineral commodity summaries, 1996 published by the U.S. Bureau of mining, the total reserves of silver mines in the world are 280000 T, with a reserve base of 420000 T, mainly distributed in the United States (31000 t reserves, 72000 t reserves), Canada (37000 t reserves, 47000 t reserves), Mexico (37000 t reserves, 40000 t reserves), Peru (25000 t reserves, 42000 t reserves) The reserve base is 37000 T) and Australia (29000 T, 33000 T). Compared with the reserves of these countries, China ranks third in the world after the United States and Canada. There are 569 proven reserves in China, which are distributed in 27 provinces, cities and autonomous regions. Jiangxi, Yunnan and Guangdong have reserves of more than 10000 tons; The provinces (regions) with reserves of 10000-5000t are Inner Mongolia, Guangxi, Hubei and Gansu. The reserves of these seven provinces (regions) account for 60.7% of the total reserves in China. The remaining 20 provinces, cities and autonomous regions only account for 39.3% of the total reserves in China
there are more lean ores and less rich ores, which are rich in associated silver resources and procing areas, but there are more lean ores and less rich ores
China is rich in associated silver resources. In 1995, the reserves of associated silver were 66146t, accounting for 58% of the total silver reserves in that year. There are still some mining areas without silver analysis or reserves calculation, so the reserves of associated silver should be more. All provinces, cities and autonomous regions except Ningxia have associated silver procing areas. Jiangxi, Hubei, Guangdong, Guangxi and Yunnan are the largest reserves and procing areas of associated silver deposits. However, there are few rich and many poor associated silver deposits in China. The rich associated silver deposits with silver grade greater than 50g / t only account for about 1 / 4 of the associated silver reserves, while the poor associated silver deposits with silver grade less than 50g / T account for 3 / 4 of the total associated silver reserves
there are few large and medium-sized procing areas and more reserves; There are few large and medium-sized procing areas and more reserves; According to the data analysis in 1992, there are 12 large-scale procing areas and 40 medium-sized procing areas in China where silver is the main mining object. The reserves of large-scale and medium-sized procing areas account for 95% of the total silver reserves; There are 29 small procing areas, accounting for only about 5% of the reserves. There are 14 large-scale procing areas and 73 medium-sized procing areas. The reserves of large and medium-sized procing areas account for 79% of the total reserves of associated silver deposits, while there are 271 small-scale procing areas, accounting for only 21% of the total reserves of associated silver deposits
most of silver is associated with lead-zinc or associated with it
most of the associated silver deposits in China are silver lead-zinc deposits, accounting for 64.3% of the total silver reserves. The associated silver deposits mainly occur in lead-zinc deposits (accounting for 44% of the associated silver reserves) and copper deposits (accounting for 31.6% of the associated silver reserves). In addition to lead-zinc and copper, there are tin, gold and polymetallic deposits associated with silver
a silver mine. The chemical composition is ag3ass3, and the crystal belongs to the trihedral system. It is also known as arsenopyrite. The English name comes from the surname of the French chemist J. - L. Proust
the light red silver ore is bright red, the streaks are also bright red, and the color becomes dark in the light. Translucent to opaque, diamond to semi metallic. Its surface is often covered by dark black film e to easy oxidation, and the powder is brick red. The hardness is 2-2.5, the specific gravity is 5.57-5.64, the rhombohedral cleavage is clear, and the fracture surface is shell to uneven. Soluble in nitric acid, fusible. The two ends of the crystal are asymmetric and short columnar; It is usually granular and massive. The crystal is columnar, rhombohedral and deltoid. They are also proced as massive or dense aggregates
the light red silver ore is a mineral of hydrothermal origin. They are usually proced together with other silver minerals and used as silver ores. It is associated with many minerals, such as tetrahedrite and arsenopyrite, and some sulfides, such as galena and quartz. There are light red silver deposits in Liaoning, Jiangxi, Qinghai and Guangdong provinces of China. Beautiful large crystal found in chanasiyo, Chile. Mexico, Bolivia and Germany have famous procing areas. In addition to being used as raw material for silver extraction, the single crystal of light red silver ore can be used as laser material
Silver Mine Bay is a bay in Hong Kong. Silver Mine Bay Hotel < br