What are the basic contents and procedures of the three rates index assessment of mining enterpris

The "three rates" of mines refer to the mining recovery rate, the mining dilution rate and the beneficiation rate. The approved "three rates" index of mine design is the basis of the assessment standard; The standard of the annual assessment index is based on the annual mining design of the mine or the mining design of the mining area. Among them, the mine recovery rate and dilution rate are divided into three types: mines, mining areas and working faces, and if the competent department of land and resources requires the formulation of two indicators of mining area and mine, the mining area index is the assessment index.

The content of the "three rates" indicator formulation and assessment system is:

The formulation and assessment of the "three rates" index is the most important assessment system for measuring and supervising the level of mineral resources development and utilization of mining enterprises, and is an important basic technical work for implementing the national compensation fee for mineral resources.

The "three rates" index shall first be demonstrated and proposed by the mining enterprises and submitted to the provincial (autonomous region, municipal) geology and mining authorities. Provincial (autonomous region, municipal) geology and mining authorities according to the actual situation, the reported "three rates" index review, and put forward amendments, by the mining enterprises after modification, and then reported to the provincial (autonomous region, municipal) geology and mining departments to confirm the record, that is, as the basis for the supervision and inspection of the "three rates" of enterprises by the competent authorities of geology and mining at all levels.

The "three rates" index is a phased index that should be in line with the actual mining situation of each mining enterprise. Each mine has its own "three rates" standard. It is impossible to propose a unified and convergent assessment standard suitable for a certain type of mine and all types of mines.

Even if the mine design is highly targeted, only one principle control index or reference index can be recommended for reference in the mine production design. In particular, with the progress of mining technology, the improvement of mining and selection equipment and the improvement of the quality of mining and selection personnel, the "three rates" index should change accordingly. Therefore, in this system, it is stipulated that when the technical conditions of ore deposit mining and the mining method change, the mining enterprise shall reformulate the "three rates" index in accordance with the prescribed procedures, and then report to the competent department of geology and mining for review, confirmation and filing.

The formulation and assessment procedures of the "three rates" indicators are:

The provincial-level competent department of land and resources shall formulate the "three rates" index of mining enterprises assessed by it. At the beginning of each year, the mining enterprise shall formulate assessment indicators according to the mining design and the mining conditions of the mining area of the current year, and report to the local municipal and county land and resources departments for review and then summarize and report to the provincial land and resources departments for identification, as the annual assessment standards. At the beginning of each year, the mining enterprises shall fill in the actual results of the "three rates" indicators of the previous year, and report to the local municipal and county land and resources departments for verification and then report to the provincial land and resources departments for confirmation.

The formulation and assessment of the "three rates" indicators are carried out simultaneously. Except for the mining enterprises that are assessed by the provincial land and resources authorities.

The basic content of the assessment is the mining loss rate, the mining dilution rate and the beneficiation rate.

The procedure is for the mining enterprises to submit the report on the development and utilization of mineral resources in the previous year to the competent department of land and resources in March each year, and the competent department of land and resources shall conduct spot checks on the "three rates" indicators of mining enterprises according to the situation submitted by the enterprises.

The so-called "three rates" of mines, that is, the abbreviation of mine mining rate, mining dilution rate and beneficiation rate.

1. The ** rate of demolition and seepage mining refers to the percentage of the actual ore mined within the mining range and the geological reserves within the scope calculated by the mining enterprise. According to the size of the calculation range, it is divided into working face, mining area, stage and the recovery rate of the whole mine. If the mining recovery rate is low, the amount of ore will be small, and the cost will be high;

2. The mining dilution rate refers to the percentage reduction of the actual ore grade compared with the raw ore grade in the mining process, and the percentage of the lost industrial reserves and the reimbursed industrial reserves. It is one of the indicators to determine the degree of utilization of underground resources on the brigade ridge. Mining dilution rate refers to the ratio between the difference between the geological grade of raw ore and the grade of mined ore and the geological grade of raw ore within the mining area;

3. The mineral processing rate refers to the percentage of the weight of a useful ingredient in the beneficiation product and the weight of the same useful ingredient in the selected raw ore. The percentage of the quality of the useful ingredient contained in the beneficiation product to the mass of the useful ingredient in the selected ore;

4. In general, the three are the main technical and economic indicators to measure mining enterprises. The three have different meanings, but they are mutually restrictive and interrelated.

The "three rates" of the mine refer to the mining rate, mining dilution rate, and beneficiation rate.

The rational development and utilization of mineral resources such as limestone, magnesite and boron is managed by the supervision group to promote the conservation and comprehensive utilization of mineral resources by mining enterprises, in accordance with the "Mineral Resources Law of the People's Republic of China" and other laws and regulations.

Legal basis: Article 343 of the Criminal Law of the People's Republic of China violates the provisions of the Mineral Resources Law by mining without obtaining a mining license, entering a mining area planned by the state, mining areas of great value to the national economy and mining areas of others without authorization, or mining specific minerals that the state provides for protective mining without authorization, and the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years, short-term detention or controlled release, and/or a fine; where the circumstances are especially serious, the sentence is to be between three and seven years imprisonment and a concurrent fine.

Whoever violates the provisions of the Mineral Resources Law by employing destructive mining methods to exploit mineral resources, causing serious damage to mineral resources, shall be sentenced to fixed-term imprisonment of not more than five years or short-term detention and shall also be fined.

The establishment of scientific and reasonable "three rates" index for the development and utilization of mineral resources is not only an important measure to lead and promote the mining productivity to the advanced level and promote resource conservation, but also an important basic work to improve the scientific management level of mineral resources in China. There are 160 kinds of minerals with identified resource reserves in China, and due to the differences in occurrence conditions, ore types, and metallurgical processes, the "three rates" index needs to be formulated according to the characteristics of mineral resources and different types of minerals. In 2012, the Ministry of Land and Resources issued and implemented the "three rates" index requirements for five minerals of coal, gold, phosphate, kaolin and vanadium titanomagnetite, and in 2013, it issued and implemented the "three rates" index requirements for seven minerals of iron, copper, lead, zinc, rare earth, potash and fluorite.

So far, China has issued the basic coverage of bulk important pillar minerals of 12 minerals "three rates" index requirements, not only for different conditions of resources to put forward the mining recovery rate and beneficiation rate requirements, but also for the associated resources, tailings, circulating water and other utilization indicators to make provisions, for the rational use of mineral resources to draw a "red line".

Box 2-2 The "three rates" index requirements of 12 key minerals The "three rates" index requirements are the "red line" for mining enterprises to utilize mineral resources, and are an important basis for the preparation of mine design and development and utilization plans and the supervision of the rational development and utilization of mineral resources by mining enterprises, which will play a positive role in guiding, motivating and restricting mining enterprises to save and intensively utilize mineral resources and improve the level of utilization. By the end of 2013, the Ministry of Land and Resources had issued a total of 12 important minerals such as coal, vanadium titanomagnetite, gold, phosphorus, kaolin, iron, copper, lead, zinc, rare earth, potash and fluorite.

National Report on Conservation and Comprehensive Utilization of Mineral Resources. 2014