阅读说明：本技术 复杂铅锌矿山矿石分区、分采、分选综合开发利用工艺 (Complex lead-zinc mine ore zoning, separate mining, sorting comprehensive development and utilization process ) 是由 姚青峰 刘福兴 周长银 王仁东 汤作锟 李洪宝 于 2018-07-09 设计创作，主要内容包括：提供了一种复杂铅锌矿山同一矿床、不同矿带、不同岩型综合开发技术,目的是减小采选协调难度,提高回采率、降低贫化率；增加选矿能力及回收率；使生产稳定高效运行。所述不同矿带、不同岩型综合开发,是将采场矿石据矿带不同、贫富差异、不同岩型、不同氧化划分若干区域,并及时更新；对划定区域矿石开展选矿研究,确定最佳工艺标准,最终形成包含分采顺序、原矿地质、工艺矿物、结构构造、选矿标准的三维模型。准确了解矿石、优化矿山“三率”,使复杂铅锌矿山回采率提高1％；贫化率降低3％；铅锌综合回收率提高10％以上。产生较大经济效益,具有借鉴和推广价值。(The comprehensive development technology for the same ore bed, different ore zones and different rock types of the complex lead-zinc mine is provided, and aims to reduce the difficulty of mining and selecting coordination, improve the recovery rate and reduce the dilution rate; the mineral separation capacity and the recovery rate are increased; the production is stable and efficient. The comprehensive development of different ore zones and different rock types is to divide ores in a stope into a plurality of areas according to different ore zones, different lean and rich, different rock types and different oxidations, and update the areas in time; carrying out ore dressing research on ores in a defined area, determining an optimal process standard, and finally forming a three-dimensional model containing a separate mining sequence, raw ore geology, process minerals, a structural structure and an ore dressing standard. Accurately knowing the ores, optimizing the 'three-rate' of the mine and improving the recovery rate of the complex lead-zinc mine by 1 percent; the depletion rate is reduced by 3 percent; the comprehensive recovery rate of lead and zinc is improved by more than 10%. Generates great economic benefit and has reference and popularization value.)

1. The complex lead-zinc mine ore zoning, separate mining and sorting comprehensive development and utilization process is characterized by comprising the following steps:

(1) ores in a stope are timely and reasonably divided into different areas according to different ore zones, difference of lean and rich, different rock types, different oxidation degrees and the like, and are timely updated along with extension of mining layering; the change trends of ore properties (grade and the like) in different directions and trends in the same region need to be recorded and plotted in time; the mining plans and development schemes of the monthly degrees, the quarterly degrees and the like are marked with ore removal sequences, extraction quantities and the like of ores in different ore zones and different areas;

(2) the useful or target minerals and the main gangue of the raw ore in different areas are studied: mastering the structure, phase, particle size, size fraction composition, etc;

(3) the ore in each divided area is respectively subjected to ore dressing experimental research: the method comprises the steps of carrying out grindability and grinding work index tests on raw ores in different areas, carrying out conditions on ores in different areas respectively, carrying out settlement experiments from open circuit to closed circuit and tailings, carrying out corresponding proportion and unit consumption research on ore grinding media with different hardness, and the like;

(4) special research on special ore sections, such as ore sections with high sulfur and high copper (the raw ore grade of local ore section copper reaches 0.24%) in the ore section of the national forest mining second river of the city of inner Mongolia Zalan Tun; carrying out laboratory and small-scale continuous separation, semi-industrialized research and the like on the oxidized ore with the oxidation rate of more than 50%;

(5) forming three-dimensional models containing different ore zones, lithology, geology, process minerals, structural structures, oxidation degrees, mineral processing process standards and the like on the ore deposit with the ascertained reserves;

(6) the stope formulates a scheme of separate penetration, separate explosion, separate mining, split charging, separate transportation, separate pile development and mining according to the three-dimensional model;

(7) and finally, the selecting factory formulates a reasonable development and utilization scheme in advance for ores of different ore zones and different rock types according to the corresponding technical standard of the mineral processing technology, so that the high-efficiency exploitation and recovery of complex lead and zinc mineral resources are practically realized, and the resources are comprehensively and efficiently recovered.

2. The process for the comprehensive development and utilization of the complex lead-zinc mine ores according to claim 1, which is characterized in that the comprehensive development and utilization of the complex lead-zinc mine ores refers to mining and recovery according to the properties of raw ores of different ore zones and different rock types of the mine.

3. The complex lead-zinc mine ore zoning, separate mining and sorting comprehensive development and utilization process according to claim 1, characterized in that ores in a mining field are timely and reasonably divided into different areas according to ore zones, difference in lean and rich, different rock types, different oxidation degrees and the like, and are timely updated along with extension of mining layering; the change trends of ore properties (grade and the like) in different directions and trends in the same area need to be recorded and mapped in time.

4. The complex lead-zinc mine ore zoning, separate mining and separation comprehensive development and utilization process according to claim 1 is characterized in that useful or target minerals and main gangue of raw ores in different areas are researched: structure, phase, particle size, size fraction composition, etc.; the experimental research of single ore proportioning and ore proportioning is respectively carried out on ore proportioning of ores in different areas and different rock types, and comprises the steps of carrying out grindability and ore grinding work index tests on raw ores in different areas, carrying out free settling experiments on ore tailings after carrying out single ore type and different proportioning on ores in different areas, carrying out corresponding proportioning and unit consumption research on ore grinding media with different hardness, and the like.

5. The process for partitioning, separately mining and sorting the complex lead-zinc mine ores according to claim 1, wherein a lead-zinc mine dressing plant finally makes a reasonable development and utilization scheme in advance according to ores which are subjected to separate penetration, separate explosion, separate mining, split charging, separate transportation and separate stacking according to a three-dimensional model in a stope, and effectively realizes the efficient mining and recovery of lead-zinc mine resources.

6. The method for effectively exploiting and recovering the lead-zinc mineral resources according to claim 5, wherein the method comprises comprehensively recovering lead-zinc oxide ore with an oxidation rate of more than 50% and special ore zones with high sulfur, copper and silver contents on the basis of detailed experimental research.

Technical Field

The invention relates to a comprehensive development and utilization process of complex lead-zinc ores, in particular to a comprehensive development and utilization process of partitioning, separate mining and sorting of complex lead-zinc mine ores.

Background

According to statistics, the total recovery rate of mineral resources in China is only about 50%, the comprehensive utilization rate of the co (concomitant) mineral resources is less than 40%, and the total recovery rate of the mineral resources is greatly different from that in foreign countries. China is a developing country, has a large population, has the quantity of most important mineral resource people far lower than the average level of people in the world, has outstanding contradictions between supply and demand, has a severe situation that the old roads of the environment are deteriorated because the mineral industry in China is not allowed to continue to waste resources and must go through sustainable development roads, and the key is to improve the comprehensive utilization rate of the mineral resources.

After more than 60 years of construction and development, the lead and zinc industry in China has formed a relatively complete industrial system and has a material basis with a considerable scale. According to statistics, the lead-zinc concentrate yield of China in 2016 reaches 700 ten thousand tons, and the lead-zinc concentrate yield accounts for about 40% of the total global yield. China has become the main producing and consuming countries of lead and zinc in the world. Meanwhile, the industry has outstanding performances in the aspects of technical progress, diversification of main industrial investment, implementation of 'going out' strategy of enterprises and the like, and in recent years, the demand of raw materials is increased dramatically due to over expansion of the capacity of lead and zinc smelting enterprises. China has changed from a lead and zinc raw material export-only country to an import-only country. Especially, the dependence of large-scale major smelting enterprises on foreign lead and zinc concentrates is higher and higher, and the shortage of lead and zinc raw materials becomes a bottleneck restricting the sustainable development of the lead and zinc industry in China.

From the consumption situation of China, the lead and zinc markets in China will have a situation of short supply and short demand in the coming years.

With the continuous increase of the demand of China on nonferrous metals, the quantity of high-quality lead-zinc ores available for mining is less and less, and only mines with various compositions and complex structural structures of lean ores, oxidized ores and rocks can be mined and recovered step by step. The traditional beneficiation method is difficult to treat and recover the raw ores, so that the resource waste is caused, and reasonable processes are urgently needed to treat the raw ores.

Disclosure of Invention

In view of the above situation, the invention adopts a comprehensive development and utilization scheme aiming at the zoning, separate mining and sorting of the complex lead-zinc mine ore, and the ore is divided into different areas according to the difference of the cause, geological structure, physicochemical property, process minerals, oxidation and argillization degree and the like of the ore through the research on the complex lead-zinc mine ore by different specialties such as mine mountain areas, measurement, mining, sorting and the like; and corresponding mining and entering-selecting sequences and processes are adopted according to the defined ore area, so that the treatment capacity is improved, and the recovery rate of the complex lead-zinc mine is improved by 1%: the depletion rate is reduced by 3 percent; the comprehensive recovery rate of lead and zinc is improved by more than 10%. Produce great economic benefit and have reference and popularization values

The technical scheme adopted by the invention is as follows:

the complex lead-zinc mine ore zoning, separate mining and sorting comprehensive development and utilization process mainly comprises the following steps and schemes:

(1) ores in a stope are timely and reasonably divided into different areas according to different ore zones, difference of lean and rich, different rock types, different oxidation degrees and the like, and are timely updated along with extension of mining layering; the change trends of ore properties (grade and the like) in different directions and trends in the same region need to be recorded and plotted in time; the mining plans and development schemes of the monthly degrees, the quarterly degrees and the like are marked with ore removal sequences, extraction quantities and the like of ores in different ore zones and different areas;

(2) the useful or target minerals and the main gangue of the raw ore in different areas are studied: mastering the structure, phase, particle size, size fraction composition, etc;

(3) the ore in each divided area is respectively subjected to ore dressing experimental research: the method comprises the steps of carrying out grindability and grinding work index tests on raw ores in different areas, carrying out conditions on ores in different areas respectively, carrying out settlement experiments from open circuit to closed circuit and tailings, carrying out corresponding proportion and unit consumption research on ore grinding media with different hardness, and the like;

(4) special research on special ore sections, such as ore sections with high sulfur and high copper (the raw ore grade of local ore section copper reaches 0.24%) in the ore section of the national forest mining second river of the city of inner Mongolia Zalan Tun; carrying out laboratory and small-scale continuous separation, semi-industrialized research and the like on the oxidized ore with the oxidation rate of more than 50%;

(5) forming three-dimensional models containing different ore zones, lithology, geology, process minerals, structural structures, oxidation degrees, mineral processing process standards and the like on the ore deposit with the ascertained reserves;

(6) the stope formulates a scheme of separate penetration, separate explosion, separate mining, split charging, separate transportation, separate pile development and mining according to the three-dimensional model;

(7) the beneficiation plant finally formulates a reasonable development and utilization scheme for ores of different ore zones and different rock types in advance according to the corresponding technical standard of the beneficiation process, so that the high-efficiency exploitation and recovery of complex lead and zinc mineral resources are practically realized, and the resources are comprehensively and efficiently recovered;

drawings

FIG. 1 is a plot of the stope ore type distribution for the practice of the invention on lead-zinc ore in the second river of the Guison mining company.

Detailed Description

The present invention has been carried out in the lead-zinc-silver polymetallic ores, etc., which are national treasures of zandland city, inner Mongolia, and specific examples are as follows.