Food-grade sodium chloride production method
A sodium chloride, food-grade technology, applied in the field of inorganic salt industrial food, can solve the problems of stacking waste, difficult to use, sodium chloride pollution, etc., to achieve the effect of reducing usage, slowing down the pressure of stacking, and saving production costs
Inactive Publication Date: 2019-04-05
QINGHAI SALT LAKE IND
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Problems solved by technology
[0005] The purpose of the present invention is to provide a food-grade sodium chloride and its production method, which is used to solve the problems that the flotation sodium chloride in the existing potassium fertilizer production method is polluted, difficult to use, stacked and wastes materials
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[0027] The present invention provides many applicable inventive concepts that can be embodied in numerous specific contexts. The specific examples described in the following embodiments of the present invention are only used as illustrations of specific embodiments of the present invention, and are not intended to limit the scope of the present invention.
[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0029] Such as figure 1 as shown, figure 1 The process flowchart of the method for producing food-grade sodium chloride of a kind of preferred embodiment that the present invention provides. The method of described production food grade sodium chloride comprises the following steps:
[0030] Step S1, the carnallite raw material is sieved to obtain an oversize material containing potassium chloride and an undersize material containing sodium chloride, and the oversize material is used to p...
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The invention discloses a food-grade sodium chloride production method, which includes the following steps: screening carnallite raw materials to obtain a screened upper substance containing potassiumchloride and a screened lower substance containing sodium chloride, wherein the screened upper substance is used for producing potassium chloride; filtering the screened lower substance for the firsttime and rinsing with water to obtain a primary filtered material; and filtering the primary filtered material for the second time and rinsing with ethanol to obtain food-grade sodium chloride. In the method, screening is preformed to obtain the screened upper substance containing the potassium chloride and the screened lower substance containing the sodium chloride, small particles of sodium chloride in the carnallite raw materials are separated in advance, and the screened lower substance is rinsed to produce the food-grade sodium chloride for utilization; when the potassium chloride is produced from the screened upper substance, if the flotation process is used to produce the potassium chloride, on the one hand, the usage amount of flotation reagents is reduced, so that the productioncost is saved; on the other hand, the residual sodium chloride in the screened upper substance is less, and the amount of sodium chloride polluted by the flotation reagents is correspondingly reduced,so that the stacking pressure is reduced.
Description
technical field [0001] The invention relates to the technical field of inorganic salt industrial food, in particular to a food-grade sodium chloride and a production method thereof. Background technique [0002] Potassium resources in China widely exist in remote areas such as Qinghai, among which the reserves in Qinghai account for more than 50% of the national reserves. The representative resources are salt lake resources, and the salt lake resources mainly include sedimentary resources and brine resources. Salt lake brine belongs to liquid chloride minerals Resources, rich in various components. Salt lake brine uses rich carnallite ore to process potassium chloride to produce potassium fertilizer. Potassium fertilizer is one of the three major chemical fertilizers of nitrogen and phosphorus and potassium. The life process plays a significant role, which is conducive to improving the water absorption in plants, the synthesis and transfer of sugars, and the use of potassium...
Claims
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IPC IPC(8): C01D3/14C01D3/08
CPCC01D3/08C01D3/14C01P2006/80
Inventor 史忠录王石军黄龙马珍于雪峰蒋中华杜佩英包玉存张守斌赵积龙
Owner QINGHAI SALT LAKE IND