Lead-zinc ore industry requirements
While it has been found that there are more than 250 kinds of lead-zinc minerals, but is currently available for only 17 kinds of industrial use. Among them, there are 11 kinds of lead industrial minerals and 6 kinds of zinc industrial minerals (Table 1), with galena and sphalerite being the most important.
The type of ore industry, based on the natural type of ore, can be classified into sulfide ore (lead or zinc oxidation rate <10%), oxidized ore (lead or zinc oxidation rate >30%), mixed ore (lead or zinc). oxidation of 10% to 30%); by the major ore can be divided into useful components: lead ore, zinc ores, zinc ore, copper, lead and zinc ores, sulfur, lead and zinc ores, copper, lead and zinc ores sulfur, tin-lead ores, lead-antimony ore, zinc-copper ore and the like; mineral structure according to configuration, can be divided into: disseminated ores, compact massive ores, brecciated ore, banded ore, fine ore vein disseminated.
To meet the needs of geological exploration work and lead-zinc mine production and construction of our country, the Ministry of Geology and Mineral Resources and metallurgical industries based on lead and zinc mining dressing and smelting technology resource status and conditions of our country, in 1983, jointly formulated and promulgated the "lead-zinc mine geology The Exploration Code (Trial) has established general industrial indicators for lead-zinc mines, which are used to evaluate the industrial value of the deposits in the census exploration (Table 2).
Table 1
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Table 2
For a specific deposit, the industrial indicators used to provide geological exploration reports as the basis for mine construction 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. After the comparative study, it is determined by the competent department of industry at or above the provincial level as the basis for the calculation of the reserves of the deposit.
When the deposit is in the process of mining, the ore industry index can continuously adjust the industrial index of the mining industry according to the changes of the lead and zinc market in the mining market, the level of mining and smelting technology, the economic benefits of mine development and the reasonable protection of resources.
In order to comprehensively develop and comprehensively utilize the associated beneficial components, when the grades of the associated components of the lead-zinc deposit reach the levels listed in Table 3, it is necessary to carefully conduct sampling and chemical analysis to study the occurrence state of the associated components and the smelting test. Comprehensive evaluation, comprehensive development, and comprehensive utilization provide the basis.
table 3
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