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Process method for preparing edible magnesium chloride by virtue of spraying granulation method

A technology of shotcrete granulation and process method, applied in magnesium chloride, magnesium halide and other directions, can solve the problems of troublesome screening, low productivity, poor granularity of edible magnesium chloride, etc. Effect

Active Publication Date: 2016-01-06
南通江海港建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor granularity of edible magnesium chloride, troublesome screening and low productivity, the invention provides a process for preparing edible magnesium chloride by spraying and granulating

Method used

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  • Process method for preparing edible magnesium chloride by virtue of spraying granulation method

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Embodiment 1

[0021] A process for preparing edible magnesium chloride by spraying and granulating, comprising:

[0022] (1). Dissolving and refining reaction: Industrial magnesium chloride is refined by dissolution, decolorization, heavy metal removal, and filtration in a refining reactor, and the filtrate is transported to a concentrated reactor;

[0023] (2). Concentration reaction: Concentrate the filtrate to saturation. At this time, the magnesium chloride content is 47%, heat it to 100°C, and send it to the top of the material-making tower for spraying;

[0024] (3).Shotcrete making: Spray the concentrated liquid through the top of the spray making dry tower, control the speed at 500 rpm, adjust the flow, and adjust according to the size of the particles: the flow rate of large particles decreases, and the flow rate of small particles Increase, the blower will send the 30 ℃ cold air cooled by the water-cooled heat exchanger into the spraying material drying tower to fully contact the ...

Embodiment 2

[0026] A process for preparing edible magnesium chloride by spraying and granulating, comprising:

[0027] (1). Dissolving and refining reaction: Industrial magnesium chloride is refined by dissolution, decolorization, heavy metal removal, and filtration in a refining reactor, and the filtrate is transported to a concentrated reactor;

[0028] (2). Concentration reaction: Concentrate the filtrate to saturation. At this time, the magnesium chloride content is 46%, heat it to 80°C, and send it to the top of the material-making tower for spraying;

[0029] (3).Shotcrete making: Spray the concentrated liquid through the top of the spray making dry tower, control the speed at 500 rpm, adjust the flow, and adjust according to the size of the particles: the flow rate of large particles decreases, and the flow rate of small particles Increase, the blower will send the 25 ℃ cold air cooled by the water-cooled heat exchanger into the spraying material drying tower to fully contact the s...

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Abstract

A process method for preparing edible magnesium chloride by virtue of a spraying granulation method comprises: (1) dissolving refined reaction: refining industrial magnesium chloride by carrying out dissolving, decoloring, heavy metal removing and filtering through a refining reaction kettle, and conveying filtrate to a condensation reaction kettle; (2) condensation reaction: concentrating the filtrate to be saturated, heating the filtrate to 80-100 DEG C, and feeding the filtrate to the top of a granulation tower to eject slurry; and (3) spraying granulation: spraying the condensed liquid at the tower top of a spraying granulation drying tower, controlling the rotating speed at 500 r / min, adjusting the flow, feeding normal temperature air into the tower to be fully contacted with spraying materials through an air blower, instantaneously cooling and curing the slurry, conveying and packaging the materials from the bottom of the tower, and emptying tail wind with an induced draft fan. The process method provided by the invention has the advantages that the process flow is simple, produced magnesium chloride particles are bead-shaped and have diameters of 0.5-1.0 mm; the particles are good in flowability, convenient for various conveying machinery and quick and uniform to dissolve in the food industry, so that the product benefit is high.

Description

technical field [0001] The invention relates to the technical field of magnesium chloride preparation, in particular to a process for preparing edible magnesium chloride by spraying and granulating. Background technique [0002] At present, the production of edible magnesium chloride in my country generally adopts a saturated solution, which is made into flakes under high temperature conditions. There are also a few manufacturers using the crystallization method. The technical content of these two products is low, and the product price is generally 1,800 yuan / ton. The main reason is that the product has a bad appearance, is flake, 1-10mm, large rules, and has no liquidity. In the process of use, mesh screens or general conveying machinery cannot be used, and manual work is required, which seriously affects labor productivity. Contents of the invention [0003] In order to solve the problems of poor granularity of edible magnesium chloride, troublesome screening and low p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/30
Inventor 闫超良
Owner 南通江海港建设工程有限公司