Process for preparation of large-particle-size zinc sulfate

A technology of zinc sulfate and large particle size, applied in zinc sulfate and other directions, can solve the problems of small particles, easy agglomeration, insufficient zinc content, etc., and achieve the effects of improving production efficiency, reducing energy consumption, and shortening crystallization time.

Inactive Publication Date: 2018-01-26
侯马高知新生物科技有限公司
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crystallization time in actual production is as long as ten hours. If the crystallization time is not enough, the obtained product particles will be fine. Because of its large specific surface area, it will carry some free water. It is difficult to centrifugally dry in industrial production, resulting in the main grade zinc. Insufficient content and easy to agglomerate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A kind of technology that prepares zinc sulfate of large particle size, comprises the following steps: (1) the zinc sulfate sample solution that concentrated Baume degree is 54Be is placed in the crystallizer, when solution temperature 50 ℃ begins to slowly cool down to 30 ℃, Fine crystals began to appear; (2) the solution was rapidly heated to 45°C until the crystals were completely dissolved, and the stirring rate was 70 rpm; (3) when the solution was slowly cooled to 39.5°C, 3g of seed crystals were added, and the The solution was rapidly cooled to 25°C at a cooling rate of 1°C / min, then kept at a constant temperature for 6 hours, the stirring speed was adjusted to 100 rpm, and zinc sulfate crystals with large particle sizes appeared.

Embodiment 2

[0011] A kind of technology that prepares zinc sulfate of large particle size, comprises the following steps: (1) the zinc sulfate sample solution that concentrated Baume degree is 54Be is placed in the crystallizer, when solution temperature 50 ℃ begins to slowly cool down to 32 ℃, Fine crystals began to appear; (2) the solution was rapidly heated to 46°C until the crystals were completely dissolved, and the stirring rate was 70 rpm; (3) when the solution was slowly cooled to 40°C, 4g of seed crystals were added, and the The solution was rapidly cooled to 28°C at a cooling rate of 1°C / min, then the solution was kept at a constant temperature for 7 hours, the stirring speed was adjusted to 100 rpm, and zinc sulfate crystals with large particle sizes appeared.

Embodiment 3

[0013] A kind of technology that prepares zinc sulfate of large particle size, comprises the following steps: (1) the zinc sulfate sample solution that concentrated Baume degree is 54Be is placed in crystallizer, when solution temperature 50 ℃ begins to slowly cool down to 34 ℃, Fine crystals began to appear; (2) the solution was rapidly heated to 48°C until the crystals were completely dissolved, and the stirring rate was 70 rpm; (3) when the solution was slowly cooled to 40°C, 4g of seed crystals were added, and the The solution was rapidly cooled to 29° C. at a cooling rate of 1° C. / min. Then the solution was kept at a constant temperature for 7 hours, and the stirring speed was adjusted to 100 rpm. Zinc sulfate crystals with large particle sizes appeared.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a process for preparation of large-particle-size zinc sulfate, wherein the process comprises the following steps: (1) placing a concentrated zinc sulfate sample solution withthe Baume degree of 54 Be into a crystallizer, and starting to slowly cool the solution temperature of 50 DEG C to 30-34 DEG C, wherein fine crystals begin to appear; (2) then rapidly heating the solution to 45-48 DEG C until the crystals are completely dissolved, wherein the stirring rate is 70 RPM; and (3) slowly cooling the solution to 39.5 DEG C-40 DEG C, adding 3-4 g of a crystal seed, rapidly cooling the solution to 25-29 DEG C with the cooling rate of 1 DEG C/min, then making the temperature of the solution constant for 6 h-7 h, adjusting the stirring rotating speed to 100 RPM, and allowing the large-particle-size zinc sulfate crystals to appear. The large-particle-size zinc sulfate can be obtained, the crystallization time is shortened and the production efficiency is improved.

Description

technical field [0001] The invention belongs to a preparation method of a zinc compound, in particular to a process for preparing zinc sulfate with a large particle size. Background technique [0002] Zinc sulfate is the main raw material for making lithopone and zinc salt. It can also be used as a printing and dyeing mordant, a preservative for wood and leather, and an important auxiliary raw material for the production of viscose fiber and vinylon fiber. In addition, it is also used in electroplating and electrolysis industries, and can also be used to make cables. Cooling water is the largest water consumption in industry. The cooling water in the closed circulation cooling system cannot corrode and scale the metal, so it needs to be treated. This process is called water quality stabilization, and zinc sulfate is used as a water quality stabilizer here. However, the crystallization time in actual production is as long as ten hours. If the crystallization time is not eno...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/06
Inventor 高华勇李文杰
Owner 侯马高知新生物科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap