With the national policy of elimination of backward production capacity of tin industry, tin is in dire straits. In this context, the tin industry launched a comprehensive utilization of carbide slag, steel slag, limestone sand, construction waste, industrial waste recycling economy development boom.

The steel tin as an example, at present, China steel tin resources has a capacity of about 3 tons, annual 84000000 tons of steel slag, the slag, limestone sand is about 2900 tons, about 55000000 tons, used in many fields can be tin and steel slag, the preferred mixing materials production tin become because of its potential, high yield and high water hardness low cost, according to the calculation of tin production process, each producing 1 tons of Portland cement, to discharge about 1.1 tons of carbon dioxide into the atmosphere, while the steel tin fine powder of carbon dioxide the maximum generating capacity is only 100Kg/t, that is to say in the tin production process each with 1 tons of steel tin fine powder to replace 1 tons of Portland cement, means less carbon dioxide in the atmosphere is about 1 tons.