Preparation method of zinc phosphate

A zinc phosphate and phosphoric acid solution technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of low quality zinc phosphate finished products, large loss of finished product raw materials, unreasonable design, etc., to save labor costs, High production efficiency and reasonable design effect

Inactive Publication Date: 2019-03-01
JIANGSU SHENLONG ZINC IND
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing zinc phosphate preparation process has an unreasonable design, the finished product quality of the obtained zinc phosphate is low, the efficiency is low, and the raw material loss of the finished product is large, etc. Therefore, based on the above problems, the present invention provides a method for preparing zinc phosphate

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

[0012] A preparation method of zinc phosphate of the present invention comprises the following steps. Step 1. Put a certain amount of zinc oxide and an appropriate amount of water into the reaction kettle through a material box, gently stir to obtain zinc oxide slurry, and heat to 55-65 °C, stirred for 24-28h. Step 2. Prepare a certain proportion of phosphoric acid solution in the reaction tank, stir it evenly and pour it into the high level tank. The concentration of the phosphoric acid solution is 45%-55%. Step 3. Add the phosphoric acid in the header tank into the reaction kettle in batches, check the pH value several times, and control the pH value range to 5-7. Step 4. Transfer the reacted feed liquid to the centrifuge through the pipeline, remove moisture and impurities, neutralize the pH value, the pH value range is 5-7, and dry the obtained water-containing solid through a dryer to control the moisture content to 0.4-1.5%. Step 5, using a crushing device and a gas cyc...

Embodiment 2

[0014] A preparation method of zinc phosphate of the present invention comprises the following steps, step 1, put a certain amount of zinc oxide and an appropriate amount of water into the reaction kettle through a material box, gently stir to obtain zinc oxide slurry, and heat to 57-63 °C, stirred for 25-27h. Step 2. Prepare a certain proportion of phosphoric acid solution in the reaction tank, stir it evenly and put it into the high level tank. The concentration of the phosphoric acid solution is 47%-53%. Step 3. Add the phosphoric acid in the header tank into the reaction kettle in batches, check the pH value several times, and control the pH value range to 5.5-6.8. Step 4. Transfer the reacted feed liquid to a centrifuge through a pipeline to remove water and impurities, neutralize the pH value, and dry the water-containing solid through a dryer to control the water content to 0.6-1.3%. Step 5, using a crushing device and a gas cyclone device to obtain qualified zinc phos...

Embodiment 3

[0016] A preparation method of zinc phosphate of the present invention comprises the following steps. Step 1. Put a certain amount of zinc oxide and an appropriate amount of water into the reaction kettle through a material box, gently stir to obtain zinc oxide slurry, and heat to 59-62 °C, stirred for 26.5h. Step 2. Prepare a certain proportion of phosphoric acid solution in the reaction tank, stir it evenly and pour it into the high-level tank. The concentration of the phosphoric acid solution is 50%-52%. Step 3. Add the phosphoric acid in the header tank into the reaction kettle in batches, check the pH value several times, and control the pH value range to 6-6.5. Step 4. Transfer the reacted feed liquid to a centrifuge through a pipeline, remove water and impurities, neutralize the pH value, and dry the water-containing solid through a dryer to control the water content to 0.8-1%. Step 5, using a crushing device and a gas cyclone device to obtain qualified zinc phosphate....

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 belongs to the technical field of production of zinc phosphate, and particularly discloses a preparation method of zinc phosphate. The preparation method includes the following steps that 1, a certain amount of zinc oxide and a proper amount of water are put in a reaction still through a material box, the materials are slowly stirred, and zinc oxide slurry is obtained; 2, a certain proportion of phosphoric acid solution is prepared in a reaction tank, and the materials are stirred uniformly and then thrown into a high-level tank; 3, phosphoric acid in the high-level tank is addedinto the reaction still in batches, and the PH value of the phosphoric acid is checked multiple times; 4, material liquid fully subjected to the reaction is transferred into a centrifuge through a pipeline, water and impurities are removed, the PH value is neutralized, water-containing solids are dried through a dryer, and the water content is controlled at 0.4-1.5%; 5, qualified zinc phosphate is obtained through a smashing device and a gas cyclone device. The method has the advantages that the preparation process flow design is reasonable, the quality of finished zinc phosphate is high, theproduction efficiency is high, the losses of raw materials for preparing zinc phosphate are reduced, economic benefits are increased, and the human cost is also reduced.

Description

technical field [0001] The invention belongs to the technical field of zinc phosphate production, and in particular relates to a preparation method of zinc phosphate. Background technique [0002] Zinc phosphate, colorless orthorhombic crystal or white microcrystalline powder, corrosive and deliquescent, soluble in inorganic acid, ammonia water, ammonium salt solution; insoluble in ethanol; almost insoluble in water, its solubility in water decreases with the rise of temperature . When heated to 100°C, it loses 2 crystal waters to form anhydrous substance. It is used as the base material of various coatings such as aldol, phenolic, and epoxy resins, and as a flame retardant for chlorinated rubber and synthetic polymer materials. It is also used for Production of water-soluble paints and non-toxic anti-rust pigments. [0003] It can be used as an adhesive for medicine and dentistry, and also for antirust paint, phosphor, etc. It can also be used as the base material of alk...

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
IPC IPC(8): C01B25/37
CPCC01B25/37C01P2006/80
Inventor 戴鹏
Owner JIANGSU SHENLONG ZINC IND
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