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The development foreground of superfine powder processing industry is broad
2017-08-13 18:34:39   Source:   Comment:0 Hit:

Modern industrial production and manufacturing technology has undergone profound changes, and this change has a common feature
In modern industrial production and manufacturing technology has undergone profound changes, this change has a common characteristic, which is the product of the original application of basic materials, new materials of superfine powder make most of the manufacturing industry and upstream raw materials. It has practically scraped all the light industrial production and manufacturing sectors. In today's world, the production, processing and application level of ultrafine powder has become a measure of national scientific and Technological Development level. Pay attention to and grasp the characteristics of this trend, with an original view, we can find the focus of Hezhou's industrial economic development.

Modern industrial manufacturing, such as papermaking, paper sizing, generally add 10% - 20% superfine powder, in high-grade copper paper, kaolin (or calcium carbonate) superfine powder up to 40%. Another example of plastic products, modified superfine powder addition, according to product requirements can be as high as 30% - 50%. In some PVC products, the addition has been as high as 70%. Ultrafine powder in plastics, rubber, electronics, cable, paint, coatings, pharmaceuticals, cosmetics, abrasives, ceramics, building materials, food processing and household electrical appliances consumption greatly, such as the United States, flour production provides added a certain amount of talcum powder. Superfine powder over 6000 mesh added to plastic products (such as in the TV cabinet), can not only improve the appearance of product size, brightness, color, touch and other physical indicators, but also can improve product strength, elasticity, toughness and resistance to aging. Another example is the use of more than 10000 mesh calcium carbonate superfine powder made of car chassis coating, can make the car chassis is stronger than the steel plate anti erosion ability. Adding superfine kaolin powder to the cable sheath can improve the insulation strength of cables 5 - 10 times. Together with the superfine powder of WanMu cosmetics adjustable above, so you can only see the appearance and difficult to perceive a born beauty cosmetics no trace. In addition, the molecular sieve catalytic cracking oil, detergent, cleaning agent, product modification, metal smelting, chemical, aerospace, machinery manufacturing and so on high temperature superconductivity, especially high-tech fields have a very wide range of applications. It is the basic material of these industrial sectors, and therefore the demand is particularly large. In 1998, according to incomplete statistics, China's paper industry demand for ultrafine powder is about 500 thousand tons, about 200 thousand tons of paint, paint, detergent 800 thousand tons, 40 tons of petroleum and chemical industry, while the maximum amount of the most extensive plastic, cable, rubber, ceramics, refractory materials, building materials and other difficult to have accurate data sources. China's "fifteen" non metallic mineral development plan draft proposed during "fifteen" for heavy calcium carbonate powder reached 250 tons, 400 tons of talc - 450, 1000 - 1200 tons of kaolin Tuda to yield. The United States in 2000 the annual consumption of ultra-fine powder has more than 40 million tons. Visible demand for ultra-fine powder is large. According to reports, China's demand for ultrafine calcium carbonate powder has more than 4 million tons of detergent (mainly washing powder) on the powder consumption of more than 800 thousand tons, with powder raw materials, automotive friction materials production reached 400 thousand tons of demand. Therefore, the trend of development is very fast.

Superfine powder is mainly produced by processing metal and nonmetal minerals and organic matters. With metal or metal ore as raw material for the production of ultrafine powder with iron powder, aluminum powder, magnesium powder, titanium powder, manganese powder, copper powder, lead powder, zinc powder, zinc oxide, molybdenum powder, tungsten powder and so on. Superfine powder non metal minerals processing with kaolin powder, titanium powder, talcum powder, feldspar powder, calcite powder, quartz powder, calcium carbonate powder, light calcium powder, fluorite powder, mica powder, barite powder, graphite powder, gypsum powder, Peng Runtu powder etc., with organic processed food are various agricultural products, medicinal herbs and other plants and animals processed into powder. All of these ultrafine powders are important raw materials for modern industry, and most of them can be used directly in industrial products. Superfine powder materials can be expanded and expanded by modifying treatment. After ultrafine powder modification is not only a kind of filling material, an important group of it as the product formation, can enhance and improve such as strength, elasticity, abrasion resistance, high temperature resistance, anti-aging, anti radiation properties of products. And can greatly reduce production costs. There are different levels of ultrafine powder particle size, below 500 mesh used to call the fine powder, about 500 - 10000 orders for the fine and superfine powder, 000 mesh used to refer to sub nanometer powder, particle size of 0.01 micrometers or less in the nano powder material (currently the world level of the ultrafine powder has not been divided standard).

There are two basic methods for obtaining ultrafine powders, one is physical method. The two is chemical synthesis, and there is a mixing method based on these two methods. Nano materials are usually mixed. The main equipment for preparation of ultrafine powder of various physical methods is the principle of different mill, classifier and collection equipment, such as jet mill, vibrating mill, Raymond mill, ball mill and so on, form basically has two kinds of dry and water.  Chemical synthesis methods include chemical reactions under various conditions, preparation of high temperature, high pressure and quenching technology, and so on. High-grade and ultra high grade ultra-fine powder production, advanced technology and equipment should be guaranteed. And the production of medium and low grade superfine powder is simple, and its product quality is mainly guaranteed by equipment performance. All the production of ultra-fine powder are basically no "three wastes" pollution and emissions. This is conducive to the beginning and rolling development of the factory. It is also conducive to investment and development of various economic components.

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