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Ore Dressing
  • How to Better Select Ore Based on Ore Characteristics? How to Better Select Ore Based on Ore Characteristics? Jun 04, 2024
    As the core link of ore utilization in the ore industry, ore sorting plays a vital role in improving ore grade and recovery rate. However, with the reduction of high-grade and easy-to-mine ores and the increasing cost of ore sorting, these are two major problems that plague mining companies. Therefore, how to adopt appropriate ore dressing methods and reduce ore dressing costs have become issues that companies need to solve urgently. In order to achieve the best ore processing effect, mining companies can reduce the cost of ore sorting by choosing the ore sorting process. At the beginning of the process design, it is necessary to select according to the ore characteristics and design a suitable and efficient ore dressing process. At the same time, due to the requirements of energy conservation and environmental protection, energy-saving and environmentally friendly ore sorting technology should be adopted to reduce energy consumption and environmental pollution, and reduce ore processing costs. First of all, the ores can be divided into the following categories according to their characteristics: 1. Physical characteristics of ore The physical characteristics of ore are mainly divided into color, shape, texture, hardness, magnetism, density, etc. Different beneficiation methods can be selected according to the physical characteristics of the ore. For ores with large differences in mineral density, such as barite, hematite, asbestos, mica, kaolin, etc., heavy media can be used for beneficiation; magnetic separation is often used for magnetite and pyrrhotite with strong magnetism, semi-pseudo-hematite with medium magnetism, some ilmenite, chromite, and weakly magnetic hematite and rhodochrosite; fluorite, talc, wollastonite, silica, lithium ore, quartz, potassium feldspar, etc. with large differences in appearance characteristics such as color, texture, shape, and gloss often use photoelectric separation. 2. Chemical characteristics of ore Different ores have different chemical characteristics, such as composition, acidity and alkalinity. For example, copper oxide ore is often separated and flotated, while gold ore is extracted by amalgamation, cyanide, thiourea, high temperature chlorination and other methods. 3. Structural characteristics of ore Ore structure refers to the characteristics of mineral particles in the ore:the shape, relative size, inter-embedded relationship of mineral particles or the inter-embedded relationship between mineral particles and mineral aggregates. For example, for impregnated copper-sulfur ore, the preferential flotation process is adopted, and the tailings after copper flotation must be flotted with sulfur again. 4. Ore Origin Environmental Characteristics Different types of ores are formed in different production environments. For example, the Yuanshanzi nickel-molybdenum ore is of sedimentary metamorphic hydrothermal transformation type. According to the characteristics of the ore, rock crushing, roasting, and flotation with reagents are selected. For example, the sedimentary barite ore in Jingtieshan, Huashugou, Sunan, Gansu and Baiyuxiacun, Sichuan, as well as the hydrothermal barite ore associated with sulfide ores and fluorite, are separated by flotation in addition to gravity separation. Ore pre-selection experiment Ore dressing experiments are an important basis for formulating correct ore sorting technology and determining ore sorting equipment. Through ore dressing experiments, ore dressing processes can be optimized and ore dressing costs can be reduced. When conducting ore dressing experiments, a reasonable test plan should be formulated according to ore characteristics and ore sorting requirements, the test process should be optimized, and the test efficiency and accuracy should be improved. During the test, the following points should be noted: 1. Experimental samples should be representative samples of the ore body to ensure the accuracy and reliability of the experiment. 2. The experiment simulated the actual production conditions as much as possible. 3. Conduct statistics and analysis on experimental data, optimize mineral processing process parameters and equipment, and improve mineral processing efficiency and recovery rate. How to choose mineral processing equipment https://www.mdoresorting.com/heavy-duty-ai-ore-sorting-machine-ore-sorter-mineral-separator-sorting-38cm-particles Ore sorting equipment is the key equipment in the mineral processing process. When selecting equipment, it is necessary to fully consider the characteristics and requirements of the ore to select the appropriate equipment. In the process of selecting equipment, performance and cost should be given priority, and factors such as equipment life, wearing parts and operation and maintenance costs should also be considered. At the same time, the choice of manufacturer is also very important, whether it is a professional provider of mining equipment. For example, MINGDE Optoelectronics specializes in the research and development and production of photoelectric mineral processing equipment. Develop a reasonable mineral processing process Formulating a reasonable process during the mineral processing is the key to ensuring the mineral processing effect and reducing the mineral processing cost. Reasonable control of each link can effectively reduce losses and operation and maintenance costs. The specific measures are as follows: 1. Reduce equipment overload and wear. 2. Strictly control the operating parameters of mineral processing equipment. 3. Formulate scientific and reasonable maintenance plans for different equipment, and conduct regular inspections and maintenance to effectively extend the service life of the equipment. In summary, reducing the cost of mineral processing and mineral processing technology should be done from multiple aspects and angles, including reasonable mineral processing process, suitable equipment, control of mineral processing process, rigorous mineral processing experiments, etc. Only by combining various factors,we can the reduction of mineral processing costs and the sustainable development of mining enterprises be achieved.
  • Classification, Uses and Sorting Processes of Various Types of Ores! Classification, Uses and Sorting Processes of Various Types of Ores! Jun 08, 2024
    The classification and use of ores are very wide. We classify them based on many factors such as the chemical composition, physical properties and industrial applications of minerals. The following are the types of metal ores and non-metallic ores that can be roughly sorted. Metal ore Metal ores are ores containing metal elements or metal compounds, and are mainly used to extract metals. Depending on the metals they contain, metal ores can be subdivided into the following categories: 1. Precious metal ores: such as gold, silver, platinum group metal ores, etc., are mainly used in the manufacture of jewelry, currency reserves and some high-tech products. 2. Non-ferrous metal ores: including copper, lead, zinc, aluminum, etc., which are widely used in wires and cables, building materials, automobile manufacturing, aircraft manufacturing, electronic products and other fields. 3. Ferrous metal ores: such as iron ore, manganese ore, and chromium ore, which are mainly used in the production of steel and other alloys. 4. Rare metal ores: such as tantalum, niobium, lithium, etc., are crucial to high-tech industries such as electronics, aerospace, and new energy vehicles. 5. Radioactive ores: such as uranium ore and thorium ore, which are mainly used in nuclear power generation and medical fields. After mining, crushing, beneficiation and refining, these ores can be refined into metals, which are processed into various products and widely used in various industries such as construction, machinery manufacturing, electronics, transportation, aerospace, etc. Non-metallic ores Non-metallic ores contain no or almost no metal elements. They either provide industrial raw materials or are used as decorative and building materials. 1. Chemical raw material ores: such as phosphate rock, potash, limestone, etc., used in the manufacture of fertilizers and chemical products. 2. Gemstones and decorative stones: such as diamonds, rubies, jade, marble, granite, etc., used in jewelry and architectural decoration. 3. Building material ores: such as gypsum, quartz sand, and limestone, used in cement, glass manufacturing and the construction industry. 4. Ceramic and refractory ores: such as kaolin and clay, used to make ceramic utensils and high-temperature resistant materials. 5. Energy minerals: such as coal, oil, and natural gas. Although they do not strictly belong to the traditional mineral classification, they are also important natural resources and are mainly used for energy supply. In addition to being used as a building material, it is also used to manufacture chemicals, medicines, cosmetics, ceramic products, glass products, etc. It is also widely used in agriculture, environmental protection and high-tech industries. In summary, ores are various and have a wide range of uses. From metal ores to non-metallic ores, from energy ores to construction ores and chemical raw material ores, they all play an important role in their respective fields. The mining and utilization of ores is one of the foundations of modern industrial society. However, the mining process needs to consider environmental protection and sustainable development. With the advancement of science and technology and the development of industry, human demand for ores will continue to increase, and the mining and utilization of ores will become more efficient and environmentally friendly. In order to make full use of various metal and non-metallic ore resources, suitable mineral processing technology is selected for separation in combination with the physical and chemical characteristics of the ore. At present, the common mineral processing methods are mainly the following: Flotation: It is a method of separation by treating the physical and chemical properties of the ore surface to make the minerals selectively attach to bubbles. In the process of mineral processing, especially in the treatment of non-ferrous metal ores (such as copper, lead, zinc, sulfur, molybdenum, etc.), flotation is widely used. In addition, some ferrous metals, rare metals and non-metallic ores (such as graphite ore, apatite, etc.) can also be treated by flotation. Gravity separation: It is a method of separation based on the relative density (also called specific gravity) of minerals. By applying fluid dynamics and various mechanical forces in a moving medium (such as water or air), the concentrators of different densities can create suitable loose stratification and separation conditions, thereby achieving the separation of mineral particles of different densities. Magnetic separation: It is a method of separating ores by using the magnetic difference of minerals to generate different forces in the magnetic field of the magnetic separator. It is mainly used for the separation of ferrous metal ores (such as iron, manganese, and chromium), and can also be used for the separation of non-ferrous metal and rare metal ores. Electrostatic separation: It is a separation method based on the difference in the electrical conductivity of minerals. By placing the minerals in a high-voltage electric field, the electrostatic force acts differently due to the different electrical conductivity of the minerals, thereby achieving the separation of minerals. This method is mainly used for the separation of rare metals, non-ferrous metals and non-metallic ores, especially in the separation of sub-mixed coarse concentrates, such as scheelite and cassiterite, zircon, tantalite and niobium ore. Chemical beneficiation: It is a beneficiation technology that uses chemical methods to change the mineral composition and then enriches the target components through other methods. For example, copper ore containing malachite can be leached with dilute sulfuric acid to convert malachite into copper sulfate solution. By replacing the copper ions in the solution with iron filings, metallic copper (sponge copper) can be obtained. Chemical beneficiation is one of the effective methods for processing and comprehensively utilizing some poor, fine, and impure mineral raw materials that are difficult to be selected. It is also one of the important ways to make full use of mineral resources, solve the problems of wastewater, waste residue, and waste gas treatment, realize waste recycling, and protect the environment. Microbial beneficiation: also known as bacterial beneficiation, is a beneficiation method that uses microorganisms such as iron-oxidizing bacteria, sulfur-oxidizing bacteria, and silicate bacteria to remove iron, sulfur, silicon and other elements from ores. By using iron-oxidizing bacteria to oxidize iron, sulfur-oxidizing bacteria to oxidize sulfur, and silicate bacteria to decompose silicon in bauxite, the purpose of desulfurization, iron removal and silicon removal can be achieved. In addition, microbial beneficiation can also be used to recover metals such as copper, uranium, cobalt, manganese, and gold. https://www.mdoresorting.com/mingde-ai-sorting-machine-separate-phosphorite-ore Photoelectric beneficiation: It is a beneficiation method that uses the physical characteristics of the ore to be beneficiated and the gangue to identify and sort. It uses a combination of machinery and electricity to separate minerals by imitating the action of hand selection. It uses the differences in the reflection and transmittance of light of different minerals, such as color, texture, shape, gloss, spots, density and other characteristic differences for identification and sorting. The ore is mainly separated after passing through the feeding system, photoelectric system, electric control system and sorting system. As a leader in the photoelectric mineral processing industry, Mingde Optoelectronics has launched a series of equipment, involving five series and more than 20 types of equipment, mainly artificial intelligence sorting machines, ore color sorting machines, mineral sand sorting machines, X-ray intelligent sorting machines, foreign body removal robots and other products. At present, it is widely used in metal and non-metallic minerals such as quartz, potassium feldspar, calcite, calcium carbonate, dolomite, fluorite, talc, wollastonite, bauxite, pegmatite quartz, limestone, calcium oxide, sponge titanium, silicon slag, gold mine, pebbles, phosphate rock, silica, brucite, tungsten tailings, coal gangue, coal-bearing kaolin, etc.!

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