Unlock instant, AI-driven research and patent intelligence for your innovation.

Vanadium containing material ball making method

A material and material crushing technology, which is applied in the pelletizing field of vanadium-containing materials, can solve the problems of poor pelletizing stability, poor thermal stability of pellets, high moisture content of wet pellets, etc., and achieve the effect of solving poor stability and good economic benefits

Inactive Publication Date: 2019-11-08
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The processes disclosed in the above invention applications all have problems such as poor pelletizing stability, high moisture content of wet pellets, difficulty in effective drying, and poor thermal stability of pellets. Phenomenon, resulting in roasted material sticking, industrial implementation and process control are more difficult

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

[0035] The bonding solution was prepared according to the mass ratio of sodium hydroxide, humic acid and water being 0.1:1.0:8.0, and the temperature was raised to 85° C., then stirred and reacted for 6 hours to obtain the bonding solution. Take 100kg of the mixed material with a mass ratio of sodium to vanadium of 1.4, mix the bonding solution and the mixed material according to the moisture content of the wet bulb at 7-8%, and control the roller pressure of the briquetting machine to 0.8-1.0MPa to briquette the ball. The particle size of the wet pellets is 5-8mm; the wet bulb drying temperature system is: drying at 150°C for 30 minutes; drying at 250°C for 20 minutes; oxidation reaction at 300°C for 20 minutes.

[0036] It has been determined that the strength of a single wet pellet ranges from 10.5 to 14.7N, with an average value of 13N per pellet. During the low-temperature dehydration-high-temperature oxidation curing process, there is no abnormal phenomenon of pellet crac...

Embodiment 2

[0038] The bonding solution was prepared according to the mass ratio of sodium hydroxide, humic acid and water being 0.1:1.0:9.0, and the temperature was raised to 85° C., then stirred and reacted for 7 hours to obtain the bonding solution. Take 100kg of the mixture with a mass ratio of sodium to vanadium of 1.6, mix the bonding solution and the mixture evenly according to the moisture content of the wet bulb at 7-8%, and control the roller pressure of the briquetting machine to 0.9-1.0MPa to briquette the ball. The particle size of wet pellets is 10-15mm. The wet bulb drying temperature system is: drying at 150°C for 40 minutes; drying at 250°C for 40 minutes; oxidation reaction at 300°C for 30 minutes.

[0039] It has been measured that the strength of a single wet pellet ranges from 11.0 to 15.1N, with an average value of 14.4N. During the low-temperature dehydration-high-temperature oxidation curing process, there is no abnormal phenomenon of pellet cracking or bursting, a...

Embodiment 3

[0041] Prepare the bonding solution according to the mass ratio of sodium hydroxide, (humic acid + starch) and water is 0.1:1.0:10.0, the mass ratio of humic acid and starch is 50:1, heat up to 95°C and then stir for reaction 8h, a binding solution was obtained. Take 100kg of the mixture with a mass ratio of sodium to vanadium of 1.8, mix the bonding solution and the mixture according to the moisture content of the wet bulb at 7-8%, and control the pressure of the ball pressing machine to 1.0-1.2MPa to press the ball. The particle size of wet pellets is 15-20mm. The wet bulb drying temperature system is: drying at 200°C for 30 minutes; drying at 300°C for 20 minutes; oxidation reaction at 370°C for 30 minutes.

[0042] It has been determined that the strength of a single wet pellet ranges from 10.0 to 15.4N, with an average value of 14.1N. During the low-temperature dehydration-high-temperature oxidation curing process, there is no abnormal phenomenon of pellet cracking or bu...

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
strengthaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a vanadium containing material ball making method. The vanadium containing material ball making method comprises the following steps that a, vanadium containing materials are crushed and screened and then are evenly mixed with sodium salt, and a mixture is obtained; b, after sodium hydroxide, a bonding agent and water are subjected to temperature rise and stirred, a bondingsolution is prepared; c, the mixture obtained in the step a and the bonding solution obtained in the step b are evenly mixed and then subjected to ball pressing into wet pellets; d, the wet pellets obtained in the step c are subjected to low-temperature water removal and high-temperature oxidizing and curing. The sodium hydroxide, the bonding agent and the water are added in the vanadium containing materials for preparing the pellets, the wet pellets are subjected to low-temperature water removal and high-temperature oxidizing and curing, a good curing function can be achieved for the pellets, and the industry production problems about poor vanadium containing material ball making stability and difficult drying are effectively solved; and high-strength qualified pellet materials can be prepared for roasting production, industrial production of roasting vanadium extraction can be achieved, and good economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of metallurgical production, in particular to a ball-making method for vanadium-containing materials. Background technique [0002] At present, the mainstream industrial production process of vanadium extraction from vanadium slag is "vanadium-containing material-sodium roasting-water extraction of vanadium-leaching liquid purification-acid ammonium salt method of vanadium precipitation-vanadium oxide products". When the vanadium-containing material is roasted by the sodium process, it is easy to form a eutectic phase with a low melting point, which will lead to problems such as sticking of the roasted material, serious sticking of the roasting equipment, deterioration of the furnace condition, and poor production ability. The high frequency of the above problems occurs, by adding the tailings after vanadium extraction or roasted clinker to dilute the low melting point phase and absorb the heat formed by the...

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): C22B1/248C22B1/243C22B34/22C22B7/00
CPCC22B1/243C22B1/248C22B7/001C22B34/22Y02P10/20
Inventor 郭继科付自碧伍珍秀蒋霖
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP