Sand and tin industry indicators

At present, China has exploration and mining of tin ore sand are the property of Quaternary loose sediments modern type, its industrial targets as follows. Sand and tin mine general industrial indicators reference table project Determination of grade by chemical analysis (tin in cassiterite)

Relaxation sieve introduction

Relaxation sieve is a new type of screening machine developed in the early 1980s. The screen is made of stretchable polyurethane rubber material. During operation, the screen is alternately tightened and slackened to make the material produce forward bounce. It can prevent the material from adherin

Domestic calcium carbide market continues to fall

On May 10th, the domestic calcium carbide market continued the previous fall trend and the price went down. The mainstream price of first grade calcium carbide in Guizhou is 3,750 yuan (ton price, the same below), and more is sent to Sichuan, Chongqing, and Yunnan regions; the first grade of calc