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Analysis of economic operation of abrasives in the first half of 2017

In the first half of this year, according to the national economic data released by the national development and Reform Commission and other authoritative departments, GDP grew by 6.9%, which fully proves that China’s economy is stable and good. Affected by the demand growth of domestic downstream enterprises and the recovery of international economy, the overall development momentum of our industry in the first half of the year was good, the effect of intelligent upgrading and transformation of enterprise equipment was obvious, the quality and efficiency were

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Do you know the correct opening method of the sealing knowledge of the roller bearing of the vertical mill

Sealing plays an important role in preventing “three leaks” of mechanical products and ensuring the normal lubrication action and safe operation of equipment. The vertical mill has high requirements for sealing, especially for the grinding roller bearing. The oil seal is set between stationary and rotating parts to prevent lubricating oil leakage and prevent impurities such as external dust and materials from entering the inner cavity of the bearing chamber. It has the characteristics of simple structure, good sealing performance, shaft swing and eccentric follow-up performance. Therefore,

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A new measure to improve oil leakage of vertical grinding roller

1 existing problems Oil leakage of grinding roller often occurs in cement plants with vertical mill, which is a difficult problem that always puzzles vertical mill manufacturers. Oil leakage not only pollutes the environment, but also increases the production cost. There are many causes for oil leakage of vertical grinding roller, which can be summarized as follows: First, the reason of grinding roller sealing. At present, the vertical grinding roller seal mainly adopts three skeleton lip seals, one dust-proof and two oil-proof. However, the working environment of

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[standards] 426 industrial standards such as air classifier, pulverizer, crusher and magnetic separator were approved

        Recently, the Ministry of industry and information technology approved 426 industrial standards, including mineral vertical air flow classifier, countercurrent contact inflatable flotation column, pendulum mill, flexible graphite wire for braided filler and superconducting magnetic separator, including 249 in machinery industry, 42 in automobile industry, 10 in pharmaceutical equipment industry, 106 in light industry, 4 in metallurgy industry and 2 in chemical industry There are 7 items in the electronics industry and 6 items in the communication industry. The excerpts are as follows:Standard No.:

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Pioneer of milling industry: Raymond Mill

Raymond Mill (pendulum mill) is a traditional type of product with the reputation of a pioneer in the milling industry. It uses the principle of rolling and grinding between roller rings to deeply process materials. It is a model of simple structure and convenient operation in vertical roller mill. Raymond mill is a three-dimensional structure with small floor area and strong systematicness. It can form an independent production system from rough processing of raw materials to transportation to pulverization and final packaging; The fineness of the finished

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Industry direct attack: is rare earth “not capped within the year” or has “peaked”?

2017 is a year of strong outbreak of rare earth in China. The trend formed by the continuous rise of rare earth minerals and rare earth products ignites not only the price but also the stock market. So whether it will be “no ceiling within the year” and “no end within the year” as the organization said, let’s see the in-depth analysis of senior practitioners in the rare earth industry.Previous reviewIn April 2017, according to the industry conditions at that time, including shutdown, environmental protection, inventory and

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The overall burden of resource tax reform was reduced, and the tax burden of calcite and barite increased

In recent 10 years, the average annual growth rate of China’s resource tax revenue is about 27%. In 2015, the resource tax revenue was 103.5 billion yuan, accounting for about 1.8% of the local tax revenue, becoming an important tax source in resource rich areas. text Since July 1, 2016, China has fully implemented the ad valorem reform of resource tax. The implementation time of this reform is short, and the impact on various mineral processing industries also needs to be treated differently. We believe that the

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Environmental protection and limited production of multiple varieties of alumina powder enterprises are facing the pressure of rising costs

Industrial alumina is the raw material for the production of many kinds of alumina. In this industrial system, industrial alumina is a river, and many kinds of alumina are tributaries. The price fluctuation of industrial alumina has a direct impact on the production cost of multi variety alumina enterprises, but it will generally lag by 1-2 months. Recent price fluctuation of industrial alumina From the market in the first half of the year, industrial alumina has been affected by multiple factors, with ups and downs like a

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The world’s largest semi autogenous mill operates at the Cartier hill mine in Australia

1.2 selection of grinding machine low-grade ore poses a dilemma for cartier mountain mine. In order to achieve economically satisfactory operation, large-scale production is required. The rainwater is stored in the dam and enclosure + EI. In addition, the concentrator uses the grinding rainwater 9 and water for the concentrator according to the largest grinding machine designed and operated at that time. Dam 1 cofferdam stores the water I!. In addition, the mill is manufactured by SVEDALA Industrial Company, with a diameter of 12.2m (40 feet) and

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Raymond mill Factory In China