Processing technology sampling

Processing technology sampling concept: ore processing technology sampling is also called process sampling. Refers to the study of the processing technology performance of ore, determine its ore dressing , smelting or other processing methods, production processes and reasonable technical and economic indicators, to provide reliable data sampling for the feasibility study of mining and the technical economic evaluation of the deposit. Sampling tasks and research content

1. For most metals and some non-metallic minerals minerals, and is determined mainly optional beneficiation of ores and process, wherein a portion of the ore smelting properties need to be studied further and other processing properties.
2. With mining, dressing, smelting industry technological developments, such as some in situ leach or heap leaching of gold, copper, uranium, salt in situ gasification of coal or ore, or save simplifies deposits and mining The ore dressing project, or the smelting and processing of the smelting and processing, must focus on the favorable geological structure conditions of the ore body, the various mineral physico-chemical properties of the ore and surrounding rock and their possible mining, selection and smelting Behavioral differences and laws in the process.
3. For most non-metallic minerals, various specialized sampling test methods or test methods must be used to ascertain the technical and physical properties associated with their industrial use.

Importance of ore smelting properties: The ore smelting properties refer to the ore's selectivity and smelting properties. 1 The ore-smelting property of ore is an important factor in the technical and economic evaluation of the deposit, especially for the new ore type, low grade, fine particles, more impurities and difficult to choose ore, which is of decisive significance; The important basis; 3 is an important basis for comprehensive utilization of mineral resources and development of new varieties of mineral resources.研究 Research on the ore-smelting properties of ore, in addition to the study of ore material composition, structure, structure, occurrence state, etc., but also to carry out different degrees of metallurgical testing.专题 The former National Reserve Committee of the “Organization of Metallurgical and Metallurgical Test” research group divided the level of smelting and testing into five levels, namely “optional (melting) test”, “laboratory process test”, “laboratory continuous test” , "Semi-industrial test" and "industrial test". The degree of experimental research on ore processing technology is determined by the mineral exploration investors.可选 The optional (melting) test is to determine whether the test object can be used as an industrial raw material in the early stage of census exploration. The simulation is low. The test is based on the preliminary study of the ore material composition, using physical or chemical methods. Get technical pointers. The sample weight is generally required to be 100 to 200 kg. The laboratory process test is to further study in what kind of process conditions the ore can be fully and rationally selected and smelted. Or to get a better technical pointer to test the process structure and conditions of multiple programs. The scale of the test is still achieved by small, non-continuous test equipment in the laboratory. The test results can be used as a basis for pre-feasibility study and development of industrial indicators for mineral deposit development. It is also the basis for mine design for easy ore selection. The sample weight is generally 300~500 kg.实验室 The laboratory extended continuous test is a test under the operating conditions of a similar production state in which the process flow test recommended by the laboratory process test is continuous, and the result is reliable. The results are generally used as a basis for mine design. The weight of the test sample depends on the size of the test equipment and the complexity of the process, and is generally 300 to 2000 kg. The semi-industrial test is a simulation test of the ore smelting industry conducted in a special test or experimental plant. It is a test based on the "production operation status" on the production type equipment. This kind of test is mainly used for the complex process of ore smelting and it is difficult to fully identify the key features of the process characteristics and equipment in laboratory tests, and it is necessary to improve the degree of test simulation. The test results can undoubtedly serve as the basis for mine design. The test sample weight is generally 5 to 25 tons.  Industrial testing is a preparatory work before the establishment of the plant, mainly in the large scale of the deposit, the complex nature of the ore, or the high rate of depletion of mining, or the use of advanced technical measures, lack of experience in industrial production, or the need for technical and economic indicators. It is only carried out when reliable verification is obtained in industrial tests. The test results are the basis and basis for the mine design and construction and production operations. This test is carried out in cooperation with the production department and the design department. Test samples are generally very heavy.试样 Sample collection: According to different ore types, the classification of ore type is: 1 The density of ore can be divided into dense, non-dense, loose ore;  2 Types of useful components in ore: ores can be divided into lead ore, zinc ores of lead and zinc ores. The specific deposits should be specifically divided;  3 content of useful components in the ore: can be divided into lean ore, medium ore, rich ore;  4 ore structure, such as massive ore, disseminated ore, breccia ore, etc. ;  5 degree of oxidation of ore, such as oxidized ore, mixed ore, sulfide ore in sulphide deposits. Classification of ore characteristics:

• Easy ore selection: simple composition, industrial use of mature ore;
• General ore: There are many available components, and the industrial use of mature ore;
• Difficult choice of ore: mixed components, fine minerals, there are technical problems at home and abroad.

The collection and merger of different types of ore must consider the characteristics of technical processing and pay attention to the natural output characteristics of the ore in the deposit, as well as the mining technology indicators, such as mining depletion rate, waste rock mixing rate, etc., to ensure that the sample has sufficient Representative. See Table 4-5-7 for the degree of ore smelting test at each stage of mineral exploration. Table 4-5-7 Scale of ore smelting test at each stage of mineral exploration

Exploration stage	Metallurgical test purpose	Research on ore material composition	Ore characteristics	Degree of test	Metallurgical sample requirements
Census	Assess whether ore can be used as an industrial raw material	initial research	Easy ore	Analogy evaluation, no experiment
			General ore	Optional (melting) test	The optional test sample weighs approximately 50-500 kg.
			Difficult to choose ore	Optional (melting) test and laboratory process test
Detailed investigation	Evaluate whether the deposit has industrial value.	Detailed study	Easy ore	Optional (melting) test	The laboratory process combination weighs 300-1000 kg. The laboratory expanded the continuous test sample 5-25t.
			General ore	Laboratory process test
			Difficult to choose ore	Laboratory process test and laboratory extended continuous test
exploration	Provide mine development feasibility study and design basis	In-depth study	Easy ore	Laboratory process test	The sample collection, test conditions and test contents are jointly determined by the geological, experimental and design units.
			General ore	Laboratory expansion of continuous trials
			Difficult to choose ore	Semi-industrial test

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