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

Method for producing sinter ore for stainless steel smelting through industrial solid waste

A technology for industrial waste residues and sintered ore, which is applied in the direction of improving process efficiency, can solve the problems of waste residues failing to meet the requirements of innocence, high recovery cost, long process flow, etc., and achieve high environmental protection benefits and economic benefits, and low costs. , the effect of strong operability

Inactive Publication Date: 2017-10-10
ZHEJIANG TELI RECYCLING RESOURCES
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electroplating sludge, pickling sludge, nickel-containing waste catalyst, chromium-containing sludge, iron and steel plant or stainless steel dust and other hazardous waste containing nickel and chromium with low valuable metal content, use wet process to recover valuable metals, process The process is long, the recycling cost is high, and the economy is poor, and the waste generated during the disposal process cannot meet the harmless requirements

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

[0020] (1) Sampling and analysis: Sampling the industrial waste residue separately to determine the type and content of the elements contained in it, and then use it as a raw material;

[0021] (2) Batching: Batching is carried out according to the chemical composition ratio of the following mass percentages: 3%NiO, 10%Cr 2 o 3 , 35%Fe 2 o 3 , 20%CaO, 12%SiO 2 , 20%H 2 O, get raw materials;

[0022] (3) Mixing: mix the various raw materials obtained after batching with flux to obtain a mixture, add sintering fuel to the mixture and mix evenly to obtain a sintering material, the flux is lime, the sintering fuel is coal powder, and the sintering fuel is added The amount is 8% of the mass of the sintered material, and the mass of particles with a particle size of 160 mesh to 200 mesh in the sintered fuel accounts for 60%;

[0023] (4) Ball making: pelletize the sintered material to obtain material pellets with a particle size of 3mm;

[0024] (5) Sintering: the sintered or...

Embodiment 2

[0026] (1) Sampling and analysis: Sampling the industrial waste residue separately to determine the type and content of the elements contained in it, and then use it as a raw material;

[0027] (2) Batching: Batching is carried out according to the chemical composition ratio of the following mass percentages: 6%NiO, 12%Cr 2 o 3 , 30%Fe 2 o 3 , 19%CaO, 10%SiO 2 , 23%H 2 O, get raw materials;

[0028] (3) Mixing: mix the various raw materials obtained after batching with flux to obtain a mixture, add sintered fuel to the mixture and mix evenly to obtain a sintered material, the flux is lime, the sintered fuel is waste activated carbon, and the sintered fuel is added The amount is 12% of the mass of the sintered material, and the mass of particles with a particle size of 160 mesh to 200 mesh in the sintered fuel accounts for 70%;

[0029] (4) Ball making: the sintered material is made into balls to obtain material pellets with a particle size of 5mm;

[0030] (5) Sintering...

Embodiment 3

[0032] (1) Sampling and analysis: Sampling the industrial waste residue separately to determine the type and content of the elements contained in it, and then use it as a raw material;

[0033] (2) Batching: Batching is carried out according to the chemical composition ratio of the following mass percentages: 4%NiO, 10%Cr 2 o 3 , 31%Fe 2 o 3 , 15%CaO, 15%SiO 2 , 25%H 2 O, get raw materials;

[0034] (3) Mixing: mix the various raw materials obtained after batching with flux to obtain a mixture, add sintered fuel to the mixture and mix evenly to obtain a sintered material, the flux is lime, the sintered fuel is coal powder, and the sintered fuel is The addition amount is 10% of the mass of the sintered material, and the mass of particles with a particle size of 160 mesh to 200 mesh in the sintered fuel accounts for 60 to 70% of the mass;

[0035] (4) Ball making: the sintered material is made into balls to obtain material pellets with a particle size of 4mm;

[0036] (5)...

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
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for producing sinter ore for stainless steel smelting through industrial solid waste. The method comprises the following steps that firstly, sampling and analyzing are carried out, wherein the industrial solid waste is sampled, and after types and contents of elements in samples are determined, the samples serve as raw materials to be used; secondly, material mixing is carried out, wherein the raw materials are subjected to chemical mixing according to the ingredient requirements of the sinter ore; thirdly, blending is carried out, wherein the various raw materials obtained after material mixing is completed and fusing agents are mixed to be uniform, sintered materials are obtained, sintering fuel is added into the sintered materials to be mixed uniform, and a mixture is obtained; fourthly, pelletizing is carried out, wherein the mixture is subjected to pelletizing, and small material beads are obtained; and fifthly, sintering is carried out, wherein a vertical sintering furnace is used for sintering the small material beads, and then the sinter ore is obtained. According to the method, steps are easy, operability is high, and the cost is low; by means of optimal screening of the mixed materials and optimal improving of the sintering steps and the process, harmless disposition of dangerous nickel containing waste and dangerous chromium containing waste and comprehensive recovering and reusing of valuable metals are achieved at the same time, and very high environmental-friendly benefits and economic benefits are achieved.

Description

technical field [0001] The invention relates to a sintered ore, in particular to a method for producing sintered ore for stainless steel smelting by using industrial waste residue. Background technique [0002] The sintered ore containing nickel, chromium and other metals is the raw material for stainless steel smelting. The sintered ore is sintered by an environmentally friendly furnace. The raw materials for the sintered ore are electroplating sludge, pickling mud, stainless steel factory rolling iron scale, nickel-containing waste catalyst, Hazardous wastes containing nickel and chromium, such as chromium-containing sludge, iron and steel plant or stainless steel dust. [0003] Electroplating sludge, pickling sludge, nickel-containing waste catalyst, chromium-containing sludge, iron and steel plant or stainless steel dust and other hazardous waste containing nickel and chromium with low valuable metal content, use wet process to recover valuable metals, process The proce...

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): C22B1/16
CPCC22B1/16Y02P10/20
Inventor 陈剑峰杨卜
Owner ZHEJIANG TELI RECYCLING RESOURCES