Current Shortage Of Tin Powder Supply

Tin powder is gray-green powder with a melting point of 231.88°C. The boiling point is 2270°C. The relative density is 7.28. It is soluble in concentrated hydrochloric acid, sulfuric acid, aqua regia, concentrated nitric acid and hot caustic alkali solution, and slowly dissolves in cold dilute hydrochloric acid, dilute nitric acid and hot dilute sulfuric acid. Cold caustic alkali solution dissolves more slowly in acetic acid. It is stable in air, but tin powder is easier to oxidize, especially in moist air. Materials used in the electronics industry, used as high-purity reagents.
 
Green material
 
PVC flame retardant and the large-scale substitution effect of zinc hydroxystannate may further strengthen the demand for tin in the chemical industry. In the tin chemical industry, tin has a broad application prospect as a green material. In the field of heat stabilizers, methyl tin mercaptan is a non-toxic and environmentally friendly PVC heat stabilizer, and zinc stannate, as a new safe and non-toxic flame retardant, is an environmentally friendly product that replaces antimony trioxide. In the next 5 years, the demand for flame retardants in the Asia-Pacific market will grow at an average annual rate of 7%, and the global demand for flame retardants will grow at an average annual rate of 4.8%. According to our calculations, by 2015, this will increase the demand for tin by 4,000 tons; in addition, assuming that 30% of the demand for antimony halogen and antimony oxide are replaced by zinc stannate, it can increase the demand for tin by 32,324 tons; the total of the two , The demand for tin in the chemical industry will double in the next 5 years.
 

The shortage continues
 
The shortage of tin metal supply will remain in a long-term pattern. Global tin production is highly concentrated. China and Indonesia have 52% of the world's tin ore reserves, while the output of tin concentrate is as high as 66%. In addition, from the company level, the world's top ten tin manufacturers produce 70% of the world's output, which is highly concentrated. Since the dilemma of exhaustion of tin ore resources in Malaysia, tin concentrate mining in Indonesia and China has begun to be guided by protective mining policies, especially after 2005, the output of tin concentrate in Indonesia has been declining year by year. Although China has not experienced a sharp reduction pattern, significant volume reduction controls have begun to appear in the export quotas of tin and its products, which is intended to strengthen the extension of the downstream industrial chain.