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Factors determining the output of a grinder

2012-03-27View Original

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The company’s grinding and crushing equipment is primarily used for the crushing and grinding of ores. Under mechanical action, the hardness of the ores is directly related to the production capacity of the equipment; ores with higher hardness result in a lower production rate compared to those with lower hardness, and this also has an impact on the wear and tear of the equipment components. Therefore, understanding the concept of hardness helps to gain a better understanding of ores, which in turn facilitates effective promotion of the equipment. The hardness of a mineral refers to its ability to resist external mechanical forces (such as scratching, indentation, grinding, etc.). The Mohs scale is a system that uses 10 minerals to measure the hardness of the hardest and softest substances in the world. They are classified into ten grades based on their hardness: 1) talc; 2) gypsum; 3) calcite; 4) fluorite; 5) apatite; 6) orthoclase; 7) quartz; 8) topaz; 9) corundum; 10) diamond. The difference in hardness between these grades is not uniform, and the grades merely indicate the relative hardness levels. The method of determining mineral hardness using a Mohs hardness scale is very simple. Scratch the predicted mineral against one of the minerals in the hardness scale; if a certain mineral can scratch calcite, it means its hardness is greater than that of calcite, but if it can be scratched by fluorite, then its hardness is less than that of fluorite. In such cases, the hardness of the mineral lies between 3 and 4, which can be expressed as 3-4. Factors such as weathering, fractures, impurities, and agglomeration patterns can affect the hardness of minerals. The hardness of minerals after weathering generally decreases. The presence of cracks and impurities affects the internal bonding strength of the mineral, as well as reducing its hardness. When the aggregate is in a fine-grained, earthy, powdery, or fibrous form, it is difficult to accurately determine the hardness of the individual particles. Therefore, testing mineral hardness should be carried out as much as possible on the fresh surface of large-grained individual particles.   The hardness of minerals is an important physical constant and identification characteristic of minerals. Slight variations in the hardness of certain minerals are often related to their formation conditions; therefore, the origin of minerals can be inferred based on their hardness. The hardness of minerals is of great significance in industrial technology. For example, high-precision diamonds are widely used in important tools such as grinding, cutting, and polishing, while low-hardness graphite is an important solid lubricant. When customers inquire about grinding machine equipment, it is necessary to know the hardness and moisture content of the ore being processed, so that the best solution can be provided for them based on the desired production volume
Reply #22012-03-27
Air compressor, air compressors, screw air compressors, Shanghai Dingsheng Machinery Co., Ltd
Reply #32012-03-30
I saw that it is expressed in Shore hardness; could you explain what Shore hardness is?

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