Tin Ore Characteristics-Application and Introduction to Tin Ore Resource Distribution Characteristics

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Tin is a strategic metal resource that is silvery white and shiny. The element symbol is Sn and the atomic number is 50. It is a main group metal in the 14th group of the periodic table of elements.

Tin ore characteristics

Tin has similar chemical properties to germanium and lead, with a relative density of 7.0, a melting point of 232°C, a hardness of 3.75, stable chemical properties, corrosion resistance, Low toxicity and good ductility. Tin resists corrosion and oxidation by water, prevents oxidation reactions by forming tin alloys with other metals, and can also serve as a catalyst for chemical reactions. Tin can present two oxidation states, namely tin monoxide and tin dioxide. It has two valence states: +2 valence and +4 valence, but +4 valence is more stable. Tin dioxide (SnO2) is very stable on the earth's crust. one of the compounds.

Application environment of tin mine

Due to the physical and chemical properties of tin, its consumer products mainly include tin plate, solder, tin alloy, etc. Tin plate It is used in the food industry and packaging materials, solder is used in the manufacturing equipment industry, and tin alloys are widely used in information technology and automobile manufacturing. It can be seen that the application fields of tin cover almost seven major strategic emerging industries. Therefore, tin ore is an important mineral resource for the development of strategic emerging industries, especially in the fields of military, aviation, and atomic energy. Tin ore has important strategic value.

In recent years, global tin resource reserves have declined sharply, and countries have begun to pay attention to the development and utilization of tin ores. Especially when the new application prospects of tin resources are promising, its strategic value has become increasingly prominent. .

Global tin resource distribution

my country is the main country with tin resources. In addition, there are Indonesia, Peru, Brazil, Malaysia, Bolivia, Russia, Thailand and Australia, etc., in 2011 Global tin reserves are 4.8 million tons, of which my country's tin reserves are 1.5 million tons, accounting for 31% of global reserves. The distribution of global tin resources is shown in the table below:

Characteristics of my country's tin resources

1. Tin ore reserves are abundant and distributed in a relatively concentrated manner. Mainly in Hunan, Guangxi, Guangdong, Yunnan, Inner Mongolia and Jiangxi. In addition, during the new round of land and resources survey, a number of large-scale tungsten-tin mines were discovered, distributed in Bailashui and Xitian in Hunan, Baigan Lake in Xinjiang, Xiaoliugou in Gansu, etc., adding 2.64 million tons of tin ore resources, further It has consolidated the dominant position of my country's tin ore resources in the world.

2. The proportion of primary tin ores is high, and most of them are associated ores. my country's tin mines are mainly primary tin ores, accounting for 80%, followed by placer tin ores, accounting for only 16%. Tin mines are present in the form of a single mineral, accounting for 12%, and those in the form of co-occurrences account for 22%.

3. Tin ore resources are of low grade, mainly large and medium-sized deposits. The grade of my country's tin ore resources is relatively low. The identified resource reserves with a grade of 0.1% to 1% are 4.202 million tons, accounting for 84.3%; the identified resource reserves with a grade of 0.1% to 0.5% are 2.755 million tons, accounting for 55.3%. %; the identified resource reserves with grades between 0.5% and 1% are 1.447 million tons, accounting for 29%. In addition, my country's tin mines are dominated by large and medium-sized deposits. The total identified resource reserves of large and medium-sized tin mines are 3.06 million tons, accounting for 61% of the total resources. Among them, Yunnan Gejiu and Guangxi Dachang are world-class super-large tin deposits.

4. The ore body is shallowly buried and the mining conditions are good. my country's tin ore resources are shallowly buried, mostly within 100113 and 300~500nl. The identified resource reserves of ore bodies buried less than 100113 are 1.321 million tons, accounting for 26.5% of the total; the identified resource reserves of buried depths of 100 to 300m are 641,000 tons, accounting for 12.8% of the total; the identified resource reserves of 300-500na The proven resource reserves are 1.659 million tons, accounting for 33.3% of the total. Tin mines in Gejiu, Yunnan and Dachang, Guangxi, were developed earlier. The ore mining conditions and hydrogeological conditions are better, and the resources are concentrated, which is conducive to large-scale mining and smelting processing.