The ore dressing test plan refers to the beneficiation plan to be used in the test, including the beneficiation method, beneficiation process and beneficiation equipment. In order to properly formulate the beneficiation test plan, it is first necessary to fully understand the nature of the ore, and must also consider the political, economic and technical factors.
The nature of ore research is extremely extensive, and the methods used are diverse and constantly evolving. Considering that most of the work in this area is undertaken by various professionals, the ore dressing personnel are not required to do it themselves. Therefore, only three issues are discussed here:
1. Initial understanding of the content, methods and procedures of the ore nature study involved in the ore selectivity study;
2. How to request the research work on ore properties according to the test task;
3. Through some common examples of mineral test schemes, explain how to analyze the research results of ore properties, and select the beneficiation scheme according to the ratio.
Contents of ore properties research The content of ore properties depends on the nature of each specific ore and the depth of the ore dressing research work, which generally includes the following aspects:
1. Research on chemical composition The research content of chemical composition is to study the types, contents and mutual combination of chemical elements contained in ore;
2. Research on mineral composition The research content of mineral composition is to study the types and contents of various minerals contained in ore, and the occurrence forms of useful elements and harmful elements.
3. The structure of the ore, the inlaid grain size of the useful minerals and its symbiotic relationship;
4. Study on the degree of dissociation of mineral processing products and their characteristics of continuous organisms;
5. Determination of particle size composition and specific surface;
6. Research on the physical, chemical, physicochemical properties and other properties of ore and its constituent minerals. Its content is more extensive, mainly in specific gravity, magnetic properties, electrical properties, shape, color, gloss, luminosity, radioactivity, hardness, brittleness, humidity, oxidation degree, adsorption capacity, solubility, pH, degree of mud, friction angle, and accumulation angle. , grindability, wettability, crystal structure, etc.
Not only the raw ore samples usually need to be studied according to the above, but also the nature of the mineral processing products should be investigated, except that the former is generally carried out before the start of the experimental research work, while the latter is gradually carried out as needed during the test. The research methods of the two are also roughly the same, but the research content of the ore sample is more comprehensive and detailed, and the inspection of the ore dressing product usually only selects some items according to the needs.
The research work on general ore properties begins with sampling of the deposit. In the sampling process of the deposit, in addition to the representative samples required for the study, it is necessary to collect information on the ore and deposit characteristics of the geological exploration. Since the ore dressing test research work is carried out on the basis of existing research work in the geological department, a comprehensive and qualitative understanding of the nature of the ore of the deposit has been made before the study. The main purpose of the re-study should be:
1. Check the difference between the sample taken this time and the sample of the past, and obtain accurate quantitative data; [next]
2. Supplemental geological departments have not done or done enough, but some items that are very important for the beneficiation test, such as mineral inlay particle size measurement, examine the occurrence of a beneficial or harmful component.
The study of ore properties must be carried out according to certain procedures, but it is not static. For some special ores, special procedures are required. For radioactive ores, radioactive measurements are first carried out, and then which minerals are radioactively identified. Sort and sample and carry out chemical composition and mineral identification work. For simple ore, the ore dressing test can be guided by existing experience and general microscopic identification work.
The ore nature study procedure required for the ore dressing test can generally be carried out as shown below.
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