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

Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology

A copper smelting and man-made technology, which is applied in the field of man-made iron-rich iron ore for ironmaking, can solve the problems of poor economic benefits, high processing costs, and poor economic indicators, and achieve the effects of energy saving, good anti-knock performance, and low cost

Inactive Publication Date: 2012-11-28
牛庆君
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, the processing costs of these technologies are generally too high, resulting in poor economic benefits. Especially in terms of energy saving and consumption reduction, various economic indicators are very poor, so these technologies are rarely used so far.

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

[0023] a. Pour the copper smelting waste slag at 1200°C into the hot slag bag, shake the bag for 10 minutes and let it stand for 15 minutes;

[0024] b. Remove the floating slag part of the uppermost layer of the hot slag bag accounting for 5% of the total volume of the discarded slag, keep the bottom slag part of the bottom layer of the hot slag bag accounting for 5% of the total volume of the discarded slag, and transfer the rest of the hot slag bag to another in hot slag bag;

[0025] c. Add iron concentrate powder with an iron content of 62% in the above-mentioned hot slag bag containing most of the waste slag. The consumption of iron fine powder is 50% of the total weight of the waste slag in the hot slag bag, and then stir evenly. Make the iron fine powder evenly melt in the waste slag;

[0026] d. Pour the waste slag with iron concentrate powder into the mold to cool, then crush, sieve, and finish it to be used as a qualified artificial iron-rich ore.

[0027] In this...

Embodiment 2

[0029] a. Pour the copper smelting waste slag with a temperature of 1100°C into the hot slag bag, shake the bag for 5 minutes and then let it stand for 10 minutes;

[0030] b. Remove the floating slag part of the uppermost layer of the hot slag bag accounting for 3% of the total volume of the discarded slag, keep the bottom slag part of the bottom layer of the hot slag bag accounting for 3% of the total volume of the discarded slag, and transfer the rest of the hot slag bag to another in hot slag bag;

[0031] c. Add iron oxide scales with an iron content of 60% to the above hot slag bag containing most of the waste slag. The amount of iron oxide scale is 30% of the total weight of the waste slag in the hot slag bag. The iron sheet is evenly melted in the waste slag;

[0032] d. The waste slag added with iron scale is then cooled by a cast iron machine, and then crushed, screened, and finished to be used as a qualified artificial iron-rich ore.

[0033] Iron oxide scale is u...

Embodiment 3

[0035] a. Pour the copper smelting waste slag at 1300°C into the hot slag bag, shake the bag for 15 minutes and let it stand for 20 minutes;

[0036] b. Remove the floating slag part of the uppermost layer of the hot slag bag accounting for 8% of the total volume of the discarded slag, keep the bottom slag part of the bottom layer of the hot slag bag accounting for 8% of the total volume of the discarded slag, and transfer the rest of the hot slag bag to another in hot slag bag;

[0037] c. Add iron-rich ore powder with an iron content of 65% in the above-mentioned hot slag bag containing most of the waste slag. The amount of iron-rich ore powder is 100% of the total weight of the waste slag in the hot slag bag, and then stir Evenly, so that the iron-rich ore powder is evenly melted in the waste slag;

[0038] d. The waste slag added with iron-rich ore powder is cooled with an iron casting machine, and then crushed, screened, and finished to be used as a qualified artificial ...

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 a method for producing artificial rich iron ore for ironmaking from copper smelting waste slag, in particular to a method for producing the artificial rich iron ore from the copper smelting waste slag by using sintering technology. The method is characterized by comprising the following steps: a, pouring copper smelting waste slag at 1100-1300 DEG C into a hot slag ladle, shaking the ladle for 5-15 minutes, and standing for 10-20 minutes; b, transferring the rest of the waste slag in the hot slag ladle into another hot slag ladle; c, adding a ferrous raw material into the hot slag ladle filled with most of the waste slag, wherein the ferrous raw material accounts for 30-100 wt% of the waste slag in the hot slag ladle; and d, pouring out the waste slag with the ferrous raw material, and cooling. By fully utilizing the sensible heat produced by the emission of the copper smelting waste slag, the method removes the impurities to purify the waste slag, recycles the ferrous metals and saves the heat energy, thereby obtaining the novel artificial rich iron ore product.

Description

technical field [0001] The invention relates to a method for producing artificial rich iron ore for ironmaking by using copper smelting waste slag, in particular to a method for producing artificial rich iron ore by using copper smelting waste slag through a sintering process. Background technique [0002] Copper smelting waste slag is a kind of solid waste discharged from copper metal smelting production in non-ferrous metallurgical enterprises, and it is a unique steel resource. Copper smelting waste slag contains not only a large amount of iron metal, silicon dioxide, calcium oxide, and magnesium oxide, but also a small amount of copper, nickel, cobalt, lead, zinc and other metals and non-metallic elements such as sulfur. The current huge amount of copper smelting Except for a small amount of waste slag, which is used as an additive in cement plants to replace iron ore, the rest has not been fully developed and utilized. In addition, the temperature of pyro-process coppe...

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): C22B1/16
CPCY02P10/20
Inventor 牛庆君
Owner 牛庆君