Continuous production method and device of magnesium sulfate heptahydrate

A technology of magnesium sulfate heptahydrate and magnesium sulfate, applied in the direction of magnesium sulfate, solution crystallization, etc., can solve problems such as unstable quality, long crystallization time, uneven crystals, etc., and achieve high degree of automation, stable quality, and uniform crystal form Effect

Pending Publication Date: 2019-05-28
山东亚邦化工科技有限公司
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Problems solved by technology

[0006] The continuous production of magnesium sulfate heptahydrate production device of the present invention solves a series of technical problems in the production process of magnesium sulfate, such as cumbersome process operation, many equipment, long crystallization time, uneven crystal, unstable quality, etc., and provides a continuous concentration , crystallization, centrifugation, drying and packaging production process

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  • Continuous production method and device of magnesium sulfate heptahydrate

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0021] First aspect, such as figure 1 Shown, the present invention proposes a kind of device of continuously producing magnesium sulfate heptahydrate, comprising: OSLO crystallizer 101, is provided with temperature controller in described OSLO crystallizer 101, and is provided with density at the bottom of described OSLO crystallizer Thickener 102, the thickener 102 communicates with the bottom of the OSLO crystallizer 101; continuous horizontal screw automatic discharge centrifuge 103, the continuous horizontal screw automatic d...

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Abstract

The invention relates to a continuous production method and device of magnesium sulfate heptahydrate. The device comprises an OSLO crystallizer, a thickener, a continuous type horizontal screw automatic unloading centrifuge, a mother liquor pool, a feeding pump, a conveying belt, a fluid bed dryer, a spiral propeller, a drum vibrating screen and an automatic packing machine. The continuous production device solves the serial technical problems that in the production process of magnesium sulfate, the operation is tedious, equipment is much, the crystallization time is long, the quality is unstable and the like, and a production technology which can continuously perform concentration, crystallization, centrifugation, drying and packaging is provided. According to the production device of the technology, the crystal forms of magnesium sulfate crystal are uniform, the quality is stable, the production is efficient, the scale is high, the automation degree is high, and unattended operationcan be realized.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a method and a device for continuously producing magnesium sulfate heptahydrate. Background technique [0002] Magnesium sulfate is an inorganic chemical raw material. It is a compound containing magnesium. It exists in the form of anhydrous magnesium sulfate, magnesium sulfate monohydrate and magnesium sulfate heptahydrate. It can be used for tanning, explosives, papermaking, porcelain, fertilizer, As well as oral laxatives in medical treatment, magnesium sulfate can also be used as magnesium fertilizer. [0003] At present, the production method of domestic magnesium sulfate heptahydrate is to adopt sulfuric acid (or sulfuric acid waste liquid) and magnesium oxide reaction direct reaction to make. Concentrate the generated magnesium sulfate solution first, concentrate it to a certain concentration, then carry out cooling and crystallization, then centrifuge and dry t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/40B01D9/02
Inventor 张照明
Owner 山东亚邦化工科技有限公司
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