As a potentially non mineral resource rich and good technological material prosperity, plaster has attracted people's attention. It especially has the excellent characteristics: simple process, low energy consumption, light quality, quick setting, so that the developed countries carry out a lot of work from theory to application. Japan, Germany, France, Russia and other industrial developed countries have been attached great importance to study the by-product plaster utilization over the years，they took advantage of phosphogypsum and flue gas desulfurization plaster and successfully opened up many new applications and new technology about plastering.
Japanese natural plaster resources are very limited and the quality is poor, industrial by-product plaster line use has been confirmed early; they began to use phosphogypsum for plaster board production in the early 20th century. In 1986, Japan consumed 6800000 tons plaster; In 1998 Japan plaster total production is 305000000 square meters. Subsequently, Japan specified the plasterboard used as fireproof board for ceiling and interior wall, resulting in plasterboard demand greatly increased. Japanese timber resources are limited; plaster products have broad application market in order to meet the needs of the construction industry. Wood building structure of Japan housing is a very obvious characteristics, plasterboard used as interior decoration materials has a rapid demand growth and obtained a widespread promotion.
Plaster is monoclinic mineral, whose main chemical components are calcium sulfate (CaSO4). Plaster has a wide range in the industrial materials and building materials which can be used in the cement retarder, plaster building products, model making, medical food additives, sulphuric acid production. Plaster began its formation on Earth 600 million years ago. Before that, sea levels were much higher than they are today. As climate changed and sea levels lowered, sea water on what is now dry land evaporated, leaving plaster deposits behind. Today, processed plaster, or hydrous calcium sulfate has made outstanding contribution to the Japanese construction industry.
In Japanese plaster grinding plant, drying, grinding, and calcining process are performed in heated impact milling equipment. In these mills hot gas contacts plaster as it is ground. The gas dries and calcines the ore and then conveys the stucco to a product cyclone for collection. The use of heated impact mills eliminates the need for rotary dryers, calciners, and roller mills. Plaster grinding plant process in Japan main purpose is to get gypsum powder whose fineness less than 6mm, the grinding effect is helpful for the fabrication of Japan gypsum products.
We must say a fact that SCM Ultrafine Mill has an excellent performance in Japanese plaster grinding plant based on its unique characteristics. SBM milling equipment is mainly used to produce fine powder and super fine powder. SCM Ultrafine Mill is applicable to non-flammable and non-explosive materials with hardness less than 6mm, such as calcite, chalk, limestone, dolomite, kaolin, bentonite, talcum, talc, vermiculite, diatomite, barite, gypsum, alum earth, graphite, fluorite, and potash ore. Wide application range of SCM Ultrafine Mill must bring great economic benefit to you. The whole set of SCM Ultrafine Mill consists of main mill, powder classifier, speed reducer, blower, bucket elevator, vibrating feeder, storage bin, bag filter, pipe and fitting, cyclone powder collector, electric control cabinet, electric motor, etc. All we have done on structure design is for high yield and high efficiency.
In recent years, in order to make full use of plaster, Japan developed a lot of new technology. SBM SCM Ultrafine Mill will become a good helper in Japan construction industry and create great benefits for our customers.
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