Salt Lake deposit boron general industrial index Deposit type Boundary grade Minimum industrial grade Minimum recoverable thickness Stone removal thickness Maximum allowable content of harmful components in water-soluble series B 2 O 3 brine 400mg/L 1000mg/L Fe≤0.02% Solid (exposed) ≥1.5% ≥2% 0.3m 0.6m Note: 1 Salt Lake brine does not specify the minimum recoverable thickness. 2 The industrial indicators of salt lake solid minerals suitable for open-air water-soluble mining can be appropriately reduced. 3 Drilling water-soluble mining, due to different ore quality, water-soluble energy and mining methods, the requirements for thickness and stone removal thickness vary greatly, and each mining area can be specifically determined. 4 kinds of salt minerals can be comprehensively utilized, and industrial indicators can be appropriately reduced. Sheet Metal Processing,Cnc Sheet Metal Bending Parts,Precision Sheet Metal Bending Parts,Sheet Metal Processing Equipment Shenzhen Kairui Precision Technology Co., Ltd. , https://www.kailiseiko.com