Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Phosphate rock micropowder pellets and preparation method thereof

A technology for micropowder pellets and micropowder balls, applied in the field of phosphorus chemical industry, can solve the problems of difficulty in controlling the production process of pellets, lowering the grade of phosphate rock pellets, complicated molding process of phosphate rock powder, etc. Low, high-intensity effects

Active Publication Date: 2021-04-27
PANZHIHUA UNIV
View PDF22 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the prior art guarantees the formation of phosphate rock powder, the addition of various additives or binders complicates the molding process of phosphate rock powder, making it very inconvenient for workers to operate and difficult to control the pellet production process, making pellets The performance of the pellets is unstable, and the additives reduce the grade of phosphate rock powder pellets, increase power consumption, increase the production cost of yellow phosphorus, and the increased acid slag will also erode the furnace lining, or a large amount of lime will be added to make the process run smoothly, making Furnace conditions deteriorated, electric furnace maintenance time was shortened, which seriously affected the production of yellow phosphorus

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phosphate rock micropowder pellets and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] In order to solve the first technical problem of the present invention, the preparation method of the phosphate rock micropowder pellets comprises the following steps:

[0028] a. Mix the organic binder, water and phosphate rock powder evenly according to the mass ratio of 0.2~0.6:10~15:100 to obtain the mixed material; the mass ratio of the organic binder, water and phosphate rock powder is preferably 0.4~0.6 :12~15:100;

[0029] b. Pelletizing the mixed material at 6-12MPa to obtain green pellets of phosphate rock micropowder; the diameter of the phosphate rock micropowder green pellets is preferably 8-30mm;

[0030] c. drying the phosphate rock micropowder green pellets to obtain phosphate rock micropowder pellets.

[0031] The homogeneous mixing described in step a can be achieved by using conventional mixing methods such as stirring and shaking to mix the materials evenly, for example, using a mixer to mix the materials evenly.

[0032] The described briquetting ...

Embodiment 1

[0045] Phosphate rock micropowder 1000kg, required organic binder 2kg, water 100kg. That is: the mass ratio of phosphate rock micropowder, organic binder and water is 100:0.2:10.

[0046] Such as figure 1The preparation method of shown phosphate rock micropowder pellets comprises the following steps:

[0047] (1) 2kg polyvinyl alcohol dry powder and 100kg water were mixed uniformly at 80°C to obtain 102kg organic binder aqueous solution.

[0048] (2) Add the organic binder aqueous solution to 1000kg of phosphate rock micropowder, then mix and stir for 15min by a mixer to obtain 1102kg of mixed material;

[0049] (3) compacting the obtained mixed material on a compacting device to obtain a compacted material;

[0050] (4) The compacted material is pelletized with a pair of roller briquetting machines, and the pressure is set to 10Mpa to obtain phosphate rock micropowder raw pellets with a diameter of 8 to 30mm;

[0051] (5) Combustion of tail gas produced with yellow phosph...

Embodiment 2

[0053] Phosphate rock micropowder 1000kg, required organic binder 3kg, water 120kg. That is: the mass ratio of phosphate rock micropowder, organic binder and water is 100:0.3:12.

[0054] The preparation method of phosphate rock micropowder pellet comprises the following steps:

[0055] (1) Mix 3kg polyvinyl alcohol dry powder with 120kg water at 85°C to obtain 123kg organic binder aqueous solution;

[0056] (2) The aqueous solution of the organic binder is added to 1000kg of phosphate rock micropowder, then mixed uniformly and stirred by a mixer for 20min to obtain 1123kg of mixed material;

[0057] (3) compacting the mixed material on a compacting device to obtain a compacted material;

[0058] (4) Carry out pellet forming to the compacted material with a pair of roller briquetting machines, and the pressure is set to 8Mpa to obtain phosphate rock micropowder raw pellets with a diameter of 8 to 30mm;

[0059] (5) Combustion of tail gas produced with yellow phosphorus, the...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a phosphate rock micropowder pellet and a preparation method thereof, belonging to the technical field of phosphorus chemical industry. The preparation method of the phosphate rock micropowder pellets of the present invention comprises the following steps: a. uniformly mixing an organic binder, water, and phosphate rock powder according to a mass ratio of 0.2 to 0.6:10 to 15:100 to obtain a mixed material; b. The mixed material is pressed into pellets at 6-12MPa to obtain phosphate rock micropowder green pellets; c. drying the phosphate rock micropowder green pellets to obtain phosphate rock micropowder pellets. The binder of the invention has less dosage and does not affect the grade of phosphate rock in the subsequent process. At the same time, the prepared phosphate rock micropowder pellets have high strength and low cost, and have broad application prospects.

Description

technical field [0001] The invention relates to a phosphate rock micropowder pellet and a preparation method thereof, belonging to the technical field of phosphorus chemical industry. Background technique [0002] Yellow phosphorus is an important chemical raw material, which can be used to produce various phosphides and phosphates, and has a wide range of uses. The production of yellow phosphorus in my country mainly adopts the electric furnace process, and the raw material usually used is phosphate rock lump ore. However, the lump ore phosphate rock in my country's phosphate rock only accounts for one-fiftieth of the total phosphorus reserves, and most of it is phosphate rock powder. At the same time, in the process of lump ore crushing, a large amount of phosphate rock powder ore will be produced, especially when using weathered phosphate rock powder ore, the generated fine powder ore usually reaches more than 20%, and this part of fine powder ore needs to be processed T...

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 Patents(China)
IPC IPC(8): C01B25/01
CPCC01B25/01Y02P20/129
Inventor 侯静吴恩辉李军徐众黄平刘黔蜀孙志立
Owner PANZHIHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com