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

A kilnless calcination process for producing powdery active lime

A technology of active lime and calcination process, applied in lime production and other directions, can solve the problems of low activity of powdered active lime, low productivity of powdered active lime, etc., to reduce labor intensity of workers, reduce equipment input cost, and achieve stable control. Effect

Active Publication Date: 2022-07-05
合肥丰达水泥科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kilnless calcination process for producing powdered active lime, which improves the efficiency of limestone calcination, thereby solving the problems of low productivity of powdered active lime and low activity of powdered active lime in the background technology

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

[0038] Embodiment 1: The present invention provides a technical solution, specifically a kiln-free calcination process for producing powdery active lime, comprising the following steps:

[0039] S1. Pulverize the quicklime;

[0040] Wherein, when using a pulverizer to pulverize the quicklime, the pulverizing cavity of the pulverizer is sealed first, then vacuumed and dried;

[0041] Among them, when vacuuming the crushing chamber of the crusher, ensure that the vacuum degree in the crushing chamber is 200pa and the humidity is 20%, and when crushing the quicklime, ensure that the sieve residue of the crushed quicklime with a particle size of 0.08mm is not more than 12%;

[0042] S2. Transport the crushed quicklime to the raw meal homogenization storehouse;

[0043] S3. Suspension preheating and decomposition of quicklime powder;

[0044] First, the quicklime powder in the raw meal homogenizer is fed into the first ascending pipe between the inlet end of the first-stage cyclo...

Embodiment 2

[0058] Embodiment 2: The present invention provides a kind of technical scheme, specifically a kind of kiln-free calcination process for producing powdery active lime, comprising the following steps:

[0059] S1. Pulverize the quicklime;

[0060] Wherein, when using a pulverizer to pulverize the quicklime, the pulverizing cavity of the pulverizer is sealed first, then vacuumed and dried;

[0061] Among them, when vacuuming the crushing chamber of the crusher, ensure that the vacuum degree in the crushing chamber is 400pa and the humidity is 10%, and when crushing the quicklime, ensure that the sieve residue of the crushed quicklime with a particle size of 0.08mm is not more than 12%;

[0062] S2. Transport the crushed quicklime to the raw meal homogenization storehouse;

[0063] S3. Suspension preheating and decomposition of quicklime powder;

[0064] First, the quicklime powder in the raw meal homogenizer is fed into the first ascending pipe between the inlet end of the fir...

Embodiment 3

[0078] Embodiment 3: The present invention provides a kind of technical scheme, specifically a kind of kiln-free calcination process for producing powdery active lime, comprising the following steps:

[0079] S1. Pulverize the quicklime;

[0080] Wherein, when using a pulverizer to pulverize the quicklime, the pulverizing cavity of the pulverizer is sealed first, then vacuumed and dried;

[0081] Among them, when vacuuming the crushing chamber of the crusher, ensure that the vacuum degree in the crushing chamber is 300pa and the humidity is 15%, and when crushing the quicklime, ensure that the sieve residue of the crushed quicklime with a particle size of 0.08mm is not more than 12%;

[0082] S2. Transport the crushed quicklime to the raw meal homogenization storehouse;

[0083] S3. Suspension preheating and decomposition of quicklime powder;

[0084] First, the quicklime powder in the raw meal homogenizer is fed into the first ascending pipe between the inlet end of the fir...

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 the technical field of lime processing, in particular to a kiln-free calcination process for producing powdery active lime, comprising the following steps: S1, pulverizing the quicklime; S2, conveying the pulverized quicklime to a raw meal homogenizer; S3. The quicklime powder in the raw meal homogenization silo is sequentially separated from gas and solid by the first, second, third and fourth cyclones; the separated materials are fed into the decomposition furnace to complete the decomposition, and the formed powdery active lime is discharged to the first Separation is carried out in the five-stage cyclone; S4, powdered active lime is successively subjected to heat exchange and separation through the first and second cooling cyclones; the air separated by the first cooling cyclone is discharged to the heating chamber of the supplementary combustion furnace for heating and then discharged into In the combustion chamber of the calciner, the finished lime products are discharged into the discharge channel through the discharge end at the bottom of the second cooling cyclone; S5, the powdered active lime products in the discharge channel are transported to the finished product warehouse for storage and standby; It solves the problems of low productivity and low activity of powdered active lime.

Description

technical field [0001] The invention relates to the technical field of lime processing, in particular to a kiln-free calcination process for producing powdery active lime. Background technique [0002] Both desulfurization and steelmaking in steel mills need to use active lime (active calcium oxide). Therefore, with the rapid development of the industry today, the demand for active calcium oxide is large. At present, the production process of activated calcium oxide mainly has the following three schemes: [0003] 1. The powder calcination process of pre-decomposition system + rotary kiln + grate cooler is adopted. In this process, the decomposition of limestone is basically completed during pre-decomposition, and the decomposed calcium oxide is calcined again in the kiln, which is easy to cause calcium oxide. The activity is reduced, and it is difficult to control the cooling process of the powdery materials after leaving the kiln in the grate cooler. [0004] 2. The bloc...

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): C04B2/10
CPCC04B2/10Y02P40/40
Inventor 张少明
Owner 合肥丰达水泥科技有限公司