The composition of barite, barium sulfate, After kefid ultrafine mill processing can be used for cement, road construction, stone and paper. And our right barite processing plant capacity of the enterprise is relatively small, does not have scale advantages, and over-exploitation of domestic barite caused a serious waste of resources, resource utilization is not high, our barite field of integrati
It is well known that from about AD 1230, the brass popular in Europe about 300 years, the bronze statue of the Weier Pu Archbishop began in 1231, is known of the earliest bronze statue of brass production.
Cast brass products is this: the first crush of zinc and charcoal mixed with the copper block up the heat, combined with zinc and copper, and then heating the alloy melt, and then the co
Marble (Marble), also known as marble, trade names, is not a the petrology define, named for its rich in Dali, Yunnan. Marble, limestone or dolomite by contact or regional metamorphism and recrystallization of the product of the mineral composition of calcite, the case of hydrochloric acid bubble with such as grain or unequal change the crystal structure, the particles of varying thickness. Mar