Novel ultra-pure ultra-white large precipitated light calcium carbonate as well as production equipment and production method thereof
A technology for production equipment and production methods, which is applied in the field of new ultra-pure ultra-white large-sink light calcium and its production equipment, and can solve the problems of coal ash and other sundries affecting the quality of light calcium, poor purity and whiteness, etc. , to achieve the effect of high production efficiency, rich enterprise products and uniform distribution
Pending Publication Date: 2020-09-04
NANZHAO XINTAI CALCIUM IND
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Problems solved by technology
Its shortcomings are: the traditional carbonization method uses coal and stone raw materials to mix and calcine at high temperature. On the one hand, it has high energy consumption, serious pollution, and low production efficiency. On the other hand, there are many sundries such as coal ash, which affects the quality of light calcium. Poor purity and whiteness limit the application of light calcium
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[0039] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.
[0040] In the actual production process of the applicant, calcium carbonate ore raw materials such as limestone and calcite are used in the prior art to prepare ultrafine or ultrafine heavy calcium carbonate powder through steps such as jaw breaking, crushing, impurity removal, and grinding, hereinafter referred to as ultrafine Or superfine heavy calcium.
[0041] The new type of ultra-pure ultra-white heavy calcium of the present application, hereinafter referred to as light calcium, adopts the ultra-fine or ultra-fine heavy calcium prepared by the above-mentioned prior art as raw material, and passes the ultra-fine or ultra-fine heavy calcium powder through an electric furnace Carry out continuous high-temperature electric firing modification to decompose ultrafine or ultrafine heavy calcium powder into ultrafine or ultrafine calcium o...
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The invention discloses novel ultra-pure ultra-white large precipitated light calcium carbonate as well as production equipment and a production method thereof. Continuous high-temperature electric firing modification is carried out on ultra-fine or ultra-micro ground calcium carbonate powder used as a raw material through an electric firing furnace to decompose the ultrafine or ultra-micro groundcalcium carbonate powder into ultrafine or ultra-micro calcium oxide powder and carbon dioxide, the obtained calcium oxide powder and water are mixed and digested in a digester, the slurry obtained after digesting is introduced into a carbonization tower, carbon dioxide is introduced for carbonization treatment, and drying and dispersing are carried out to obtain the novel ultra-pure ultra-whitelarge precipitated light calcium carbonate. The production equipment comprises an electric burning furnace, a digestion machine and a carbonization tower, the electric burning furnace is connected with the digestion machine through a bucket elevator, and the digestion machine is connected with the carbonization tower through a pipeline. The combination degree with the existing equipment is high, continuous production in a production line is realized, enterprise products are enriched, and the obtained light calcium carbonate has higher purity and whiteness and more excellent performances.
Description
technical field [0001] The invention belongs to the technical field of light calcium production, and in particular relates to a new type of ultra-pure, ultra-white, heavy-body light calcium and its production equipment and method. Background technique [0002] Light calcium carbonate is light calcium carbonate, which is one of the important inorganic powder fillers. It can be used as a filler in industries such as rubber, plastics, papermaking, coatings and inks, and is widely used in the production of organic synthesis, metallurgy, glass and asbestos. my country's light calcium industry, with the rapid development of economic construction, the production volume and use demand are increasing rapidly, but compared with foreign counterparts, there is a big gap in the production scale, capacity, level and quality of the whole industry. The equipment has high energy consumption, high cost, serious environmental pollution, and limited product application. [0003] At present, my ...
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Patent Timeline
Login to View More IPC IPC(8): C01F11/18C01F11/06C04B2/10F27B17/00F27D11/02F27D3/12
CPCC01F11/181C01F11/06C04B2/10F27B17/00F27D11/02F27D3/12C01P2006/80C01P2006/12F27D2003/121
Inventor 刘武营童姗刘汉卿刘真真周士贤宋鲜名刘璐王康朱春露
Owner NANZHAO XINTAI CALCIUM IND