At present, although more than 120 kinds of antimony minerals and antimony minerals have been found on the earth's crust, they have industrial utilization value and are suitable for current metallurgical conditions. There are only 10 kinds of antimony minerals containing more than 20% antimony, namely stibnite ( Containing Sb 71.4%), Fangyu Mine (including Sb 83.3%), Yuhua (including Sb 83.3%), vermiculite (including Sb 74% to 79%), Huang Qihua (including Sb 74.5%), sulphur oxonium ore ( containing Sb 75.2%), antimony NATURAL (with Sb 100%), thimerosal antimony ore (containing Sb 51.6%), Jamesonite lead ore (containing Sb 35.5%), dark green copper ore (containing Sb 25%). Among them, stibnite is the most important mineral raw material for the selection of smelting.
The type of antimony ore is classified into natural types and industrial types during geological exploration. The natural type of strontium ore can be divided into three types: oxidized ore, mixed ore, and primary ore. The standard is divided according to the oxidation rate (%): oxidized ore >50%, mixed ore 30% to 50%, and primary ore <30%. . The industrial type of antimony ore, according to the characteristics of the material composition of antimony deposits in China, some single deposits dominated by antimony, more are multi-component co-contributing deposits, and some are associated with gold , mercury, tungsten and so on. Therefore, the ore industry types are: single bismuth, bismuth gold, bismuth mercury, strontium tungsten, strontium tungsten and other types.
General industrial requirements for antimony ore: boundary grade, containing Sb 0.7%; industrial grade, containing Sb 1.5%; recoverable thickness â‰¥ 1m; stone removal thickness â‰¥ 2m. This industrial requirement indicator is for reference only in the detailed investigation and early stage of exploration. Where geological exploration reports are provided for the construction of mines, the specific industrial indicators used for the exploration of the deposits shall be submitted by the geological exploration unit with preliminary geological information, and the industrial department shall entrust the mining design department to conduct economic accounting and comparative research. The competent department of industry at or above the provincial level determines.
When the associated components in the antimony deposit reach the following levels, attention should be paid to the comprehensive evaluation.
Associated grades in antimony deposits: Au 0.1g/t, WO 3 0.05%, Hg 0.005%, Pb 0.2%, Zn 0.4%, As 0.2%, S 2%, Cu 0.1%, Sn 0.08%, Ag 2g/ t, Bi 0.02%, Se 0.001%, Co 0.1%, Ni 0.1%, CaF 2 5%, BaSO 4 5%.
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