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

Processing method of blast furnace blowing waste fabric

A processing method and technology of waste fabrics, applied in the field of metallurgy, can solve the problems of unfavorable large-scale application of iron and steel enterprises, short residence time in tuyere combustion zone, complicated crushing and mixing process, etc., achieve obvious combustion-supporting effect, low price, and increase enterprise profit Effect

Active Publication Date: 2015-12-16
新中天环保工程(重庆)有限公司 +1
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blast furnace coal injection is the most mature technology among them, but due to the extremely short residence time of pulverized coal in the tuyere combustion zone, full combustion cannot be carried out, thus limiting the further increase of coal injection volume
[0004] At present, the widely used blast furnace injection combustion aids in China are mainly alkaline earth metal oxides, rare earth metal oxides, etc., which not only need to go through preparation steps such as crushing and mixing, but also have high raw material costs, which is not conducive to large-scale production of iron and steel enterprises. application
Such as a combustion enhancer in the prior art is a powdery mixture of iron red, rare earth oxides, alkali metal oxides and other impurities, which need to be mixed in a certain proportion and then sprayed into the blast furnace through a coal gun. Although iron red can be achieved recycling, but the addition of rare earth oxides and alkali metal oxides will undoubtedly increase the cost of raw materials, and the crushing and mixing process is also relatively complicated
In the prior art, there is also a kind of combustion enhancer which is composed of roasted siderite, lightly burned dolomite and dedusting ash, but the preparation of the combustion enhancer needs to go through steps such as material preparation, crushing, weighing, mixing, etc. The preparation process is relatively complicated and the cost is also low. higher
[0005] To sum up, in the prior art, some relatively useful industrial raw materials are usually used as combustion aids for blast furnace injection, and at the same time, it may also cause sulfur-containing gas emissions and high-alkali dust emissions

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
  • Processing method of blast furnace blowing waste fabric
  • Processing method of blast furnace blowing waste fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A processing method of blast furnace blown waste fabric, is characterized in that, comprises the following steps:

[0022] 1) Pure cotton fiber fabric is used as raw material.

[0023] see figure 1 In part a of the method, the raw material is broken into small pieces of raw material, and the maximum width of these small pieces is less than 3 mm.

[0024] 2) making rice soup; in the embodiment, 1Kg of rice is used to add 5L of water to make 4L of rice soup.

[0025] 3) Using the rice soup as a binder, a cylinder pelletizer is used to pelletize the raw material pellets, and the obtained pellets are the product. The weight ratio of binder to raw material chips is 1:10.

[0026] In the present embodiment, the prepared pellets are sieved to obtain a particle size range of less than 5mm ( figure 2 a) and 6-10mm ( figure 2 Part d) of two kinds of pellets.

[0027] The product using this embodiment is at 1250m 3 Industrial application test on blast furnace.

[0028] T...

Embodiment 2

[0030] A processing method of blast furnace blown waste fabric, is characterized in that, comprises the following steps:

[0031] 1) Polyester fiber fabric is used as raw material.

[0032] see figure 1 In parts a and b, the raw material is broken into small pieces of raw material, and the maximum width of these small pieces is less than 3 mm.

[0033] 2) making rice soup; in the embodiment, 1Kg of rice is used to add 5L of water to make 4L of rice soup.

[0034] 3) Using the rice soup as a binder, a cylinder pelletizer is used to pelletize the raw material pellets, and the obtained pellets are the product. The weight ratio of binder to raw material chips is 1:10.

[0035] In the present embodiment, the prepared pellets are sieved to obtain a particle size range of less than 5mm ( figure 2 b) and 6-10mm ( figure 2 Part e) of the two pellets.

[0036] The product using this embodiment is at 1250m 3 Industrial application test on blast furnace. The mass ratio of 0-5mm ...

Embodiment 3

[0038] A processing method of blast furnace blown waste fabric, is characterized in that, comprises the following steps:

[0039] 1) Use cotton polyester blended fabric as raw material. The cotton-polyester blended fiber is a blended fabric of 80% cotton and 20% polyester

[0040] see figure 1 Part c of said raw material is broken into small pieces of raw material, the maximum width of these small pieces is less than 3mm.

[0041] 2) making rice soup; in the embodiment, 1Kg of rice is used to add 5L of water to make 4L of rice soup.

[0042] 3) Using the rice soup as a binder, a pelletizing machine (cylindrical pelletizing machine) is used to pelletize the raw material pellets, and the obtained pellets are the product. The weight ratio of binder to raw material chips is 1:10.

[0043] In the present embodiment, the prepared pellets are sieved to obtain a particle size range of less than 5mm ( figure 2 c) and 6-10mm ( figure 2 Two kinds of small balls of part f).

[00...

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 discloses a processing method of a blast furnace blowing waste fabric. The waste fabric comprises natural fiber and chemical fiber, is a compound mainly composed of C, H, O, N and other elements, and broken waste fabric is subjected to granulation by a binder. The blast furnace blowing combustion improver provided by the invention is obtained by processing of waste fabric that cannot be worn and reutilized in daily life, not only can solve the problems waste treatment and environmental pollution, but also can reduce the smelting cost of iron and steel plants and improve corporate profits. At the same time, the blast furnace blowing waste fabric can improve the combustion efficiency of pulverized coal in a tuyere zone, and the generated reducing gas is conducive to iron ore reduction. The blast furnace blowing waste fabric is a very good blast furnace blowing combustion improver, has the characteristics of low prices and simple production process, can be well mixed with pulverized coal, and has significant combustion supporting effect.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for improving blast furnace efficiency. Background technique [0002] With the rapid development of the fiber industry, various fiber products have been widely used in industrial fields and daily life. However, the accompanying large amount of fiber waste has caused a great burden to the society, and a lot of financial and material resources have been spent on processing recycled fibers. Therefore, people are also constantly considering how to utilize these domestic waste materials. [0003] On the other hand, blast furnace fuel injection is to inject gas, liquid or solid fuel into the blast furnace from the tuyeres through special equipment to replace part of the coke in the blast furnace charge. than the main measure. Blast furnace coal injection is the most mature technology among them, but due to the extremely short residence time of pulverized coal in the tuyere combust...

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): B01J2/00B01J2/12B01J2/28C10L9/10C10L9/00C10L5/46
CPCY02E50/10Y02E50/30
Inventor 刘清才孔明任山杨剑王小青赵冬姚璐孟飞
Owner 新中天环保工程(重庆)有限公司