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Preparation method of high temperature baked salt

A high-temperature baking and baking technology, applied in the field of salt production, can solve problems such as low impurity content, and achieve the effect of avoiding pollution and corrosion

Inactive Publication Date: 2018-02-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-temperature baking salt has the characteristics of high purity, low impurity content, bright color, no peculiar smell, and high crystallinity. It belongs to high-end table salt products. However, there are almost no domestic products on the market

Method used

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  • Preparation method of high temperature baked salt

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of this high-temperature roasting salt, its specific steps are as follows: first the former salt (NaCl97.5wt%, Ca0.15wt%, Mg0.009wt%, SO 4 2- 0.20wt%) into a baking tray, baked at 850°C for 20 minutes, then cooled to 200°C, took out the roasted salt block from the baking tray, and then crushed and ground the roasted salt block to less than 0.1mm to obtain high-temperature roasted Salt (NaCl99.77wt%, Ca4 2- 0.012wt%). The baking tray is made of corundum.

[0016] The photo comparison between the roasted salt prepared in this implementation 1 and the original salt is as follows figure 1 shown, from figure 1 It can be seen that the macroscopic crystal structure of the original salt is changed by melting recrystallization, and the roasted salt with bright color and high crystallinity is obtained.

Embodiment 2

[0018] The preparation method of this high-temperature roasting salt, its specific steps are as follows: first the former salt (NaCl97.89wt%, Ca0.078wt%, Mg0.012wt%, SO 4 2- 0.17wt%) into a baking tray, heated to a temperature of 1050°C without heat preservation, then cooled to 300°C, removed from the baking tray, and then crushed and ground the baked salt block to below 0.1mm to obtain high-temperature roasting Salt (NaCl99.61wt%, Ca4 2- 0.010wt%). The baking tray is made of corundum.

Embodiment 3

[0020] The preparation method of this high-temperature roasting salt, its specific steps are as follows: first the former salt (NaCl97.87wt%, Ca0.15wt%, Mg0.006wt%, SO 4 2- 0.23wt%) into a baking tray, baked at 950°C for 30 minutes, then cooled to 250°C, took out the baked salt block from the baking tray, and then crushed and ground the baked salt block to less than 0.1mm to obtain high-temperature roasted Salt (NaCl99.82wt%, Ca4 2- 0.016wt%). Wherein the baking tray is made of ceramics.

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Abstract

The invention relates to a preparation method of high temperature baked salt, and belongs to the technical field of salt production. Firstly crude salt is filled in a baking tray, baking is carried out at 850-1050 DEG C for 0-30 minutes, cooling is carried out till the temperature is at 200-300 DEG C, baked salt blocks are taken out from the baking tray, the baked salt blocks are fragmented and grinded till the blocks are below 0.1mm, and the high temperature baked salt is obtained. The high temperature baked salt greatly reduces contents of calcium, magnesium and sulfate radicals in crude salt, content of sodium chloride in the crude salt is increased, macroscopic crystal structure of crude salt is changed, the high temperature baked salt with bright color and high degree of crystallization and without peculiar smell is obtained, and the product quality accords with national standards.

Description

technical field [0001] The invention relates to a preparation method of high-temperature baking salt, which belongs to the technical field of table salt production. Background technique [0002] With the liberalization of the salt industry market and independent pricing and sales by production enterprises, the era of market competition in the salt industry is coming. Developing unique products with high added value, realizing product diversity and product exclusivity is the only way to win the market magic weapon. High-temperature baking salt has the characteristics of high purity, low impurity content, bright color, no peculiar smell, and high crystallinity. It belongs to high-end table salt products. However, there are almost no domestic products on the market. Therefore, the development, production and sale of high-temperature baking salt products will fill the gap in this domestic product and improve market competitiveness. Contents of the invention [0003] Aiming a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D3/04C01D3/14
CPCC01D3/04C01D3/14C01P2006/80
Inventor 邓志敢魏昶李兴彬樊刚李旻廷李存兄
Owner KUNMING UNIV OF SCI & TECH
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