Feldspar is an aluminosilicate mineral of alkali metals and alkaline earth metals such as potassium, sodium and calcium. It has a huge family and is the most common rock-forming mineral. It occurs widely in various magmatic rocks and metamorphic rocks, accounting for About 50% of the total crust, of which about 60% of the feldspar ore occurs in magmatic rocks. The feldspar mine is mainly composed of potassium and albite rich in potassium or sodium, and its development in ceramics, military industry, chemical industry, construction and other industries is the “main force”.It is mainly used as a raw material for the glass industry to produce glass products such as flat glass, glassware and glass fiber; secondly, it is used as a raw material for ceramics and glaze to produce wall tiles, chemical ceramics, electrical ceramics and mill linings; it is mainly used as a chemical raw material for the production of Rubber and plastic fillers and production of chemical fertilizers, etc.; when used as building materials, it mainly produces special cement and glass fiber.
After the release of the “14th Five-Year Plan for Non-metallic Mines and the Vision for 2035″, the “Plan” summarizes the good achievements and development problems of the “13th Five-Year Plan”; analyzes the development environment and market demand, and proposes New guiding ideology, basic development principles, and main goals have been formulated, and key tasks, key projects and safeguard measures have been clarified.
The non-metallic mining industry strives to implement the new development concept, firmly grasps the strategic opportunity that my country’s economic development is entering high-quality development, researches and drafts the “Guiding Opinions on Promoting the High-quality Development of the Non-metallic Mining Industry”, and proposes the high-quality development of the industry characteristics, work objectives, basic principles and safeguards;Organize the compilation of the “2021-2035 Non-metallic Mining Industry Technology Development Roadmap”, sort out and clarify the development needs, development priorities, major projects and demonstration projects of non-metallic mining technologies in stages, and further enhance the guidance and purpose of scientific and technological innovation in the industry; Organize the formulation of the “Action Plan for Innovative Research and Development of New Generation Technology and Equipment in the Non-metallic Mining Industry”, and put forward the goals and tasks for the innovative research and development of the new generation of non-metallic mineral technology and equipment.
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It was drafted by the China Non-metallic Mining Industry Association, and the Ministry of Natural Resources issued and implemented the standard of “Specifications for Green Mine Construction in the Non-metallic Mining Industry”.The pilot demonstration work of intelligent manufacturing in the two key aspects of “equipment manufacturing” and “product production” has been carried out, which has promoted the in-depth development of intelligent manufacturing in the non-metallic mining industry. Organized and carried out research on new technologies and new processes such as tailing-free deep processing technology, dry crushing and purification technology, and preparation of porous materials from silicate minerals; successfully developed large-scale strong magnetic separators, superconducting magnetic separators, large-scale ultra Complete sets of production lines for crushing, fine grading and modification, high-precision particle shape system analyzers and other new instruments and new equipment.
China is a country with large feldspar ore resources. The reserves of feldspar ore of various grades are 40.83 million tons. Most of the deposits are pegmatite deposits, which are also the main types of deposits currently developed and utilized. According to the China Building Materials Industry Standard (JC/T-859-2000), feldspar ore is divided into two categories (potassium feldspar, albite) and three grades (superior product, first-class product, qualified product). In Anhui, Shanxi, Shandong, Hunan, Gansu, Liaoning, Shaanxi and other places.
According to the content of potassium, sodium, silicon and other elements, the main uses of feldspar minerals are also different. Feldspar beneficiation methods are mainly magnetic separation and flotation. Magnetic separation generally adopts wet strong magnetic separation, which belongs to physical method beneficiation, environmental protection and pollution-free, and is suitable for iron removal and purification of feldspar ore of various properties. The specific conditions such as embedded characteristics and selected particle size are selected by different field strengths and magnetic separation equipment for sorting, but the magnetic field strength is basically required to be above 1.0T.
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Formulate appropriate beneficiation processes for feldspar ore of different properties: for pegmatite-type feldspar ore, the mineral crystal particles are large and easy to separate. , the beneficiation effect is good and environmentally friendly; for the feldspar with high quartz content, the combined process of strong magnetic separation and flotation is mainly used, namely crushing-grinding-classification-strong magnetic separation-flotation. Magnetic separation first removes magnetic impurities such as iron oxide and biotite, and then uses flotation to separate feldspar and quartz to obtain two high-quality products. The above two beneficiation processes have achieved the goal of streamlining and high efficiency in the beneficiation of feldspar ore, and have been widely promoted and applied.
Huate equipment application case
Post time: Mar-22-2022