CN101348740A

CN101348740A - Recycling utilization method of coke powder

Info

Publication number: CN101348740A
Application number: CNA2008100131816A
Authority: CN
Inventors: 王立新; 王戈
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-12
Filing date: 2008-09-12
Publication date: 2009-01-21

Abstract

The invention relates to a method for reclaiming and reutilizing coke powder, in particular to a method for preparing block shaped or columnar coke after mixing the coke powder and an additive. The method comprises the following steps: firstly, raw materials are mixed according to in weight percentage: 48 to 72 percent of the coke powder, 3 to 7 percent of limestone, 23 to 40 percent of wood chips and 2 to 5 percent of water; secondly, the mixture is put to a stirrer, evenly stirred and put to a rod making device; and the finished product after extrusion molding is columnar or block coke. The method fully utilizes waste resource and reduces environmental pollution; and the columnar or block shaped coke prepared by the method can be used as metallurgical coke, cupola coke, export coke and common coke, thereby reducing manufacturing cost.

Description

The recycling method of coke powder

Technical field:

The present invention relates to a kind of recycling method of coke powder, is with coke powder and the method that is prepared into bulk or column coke after additive mixes specifically.

Background technology:

At present, because the development need of national economic development, iron and steel smelting quantity heightens, for the demand of coke also in continuous increase.The price rapid growth of coke can produce a large amount of coke powders in the transportation of coke and use, these powder are because shapeless shape, can't put into again in the production, outside can only being deposited in all the year round, cause environmental pollution, the method that coke powder does not utilize again is a kind of waste.

Summary of the invention:

In order to solve the problem of above-mentioned existence, the invention provides a kind of recycling method of coke powder, this method makes full use of waste resource, utilizes coke powder to prepare block coke, reduces environmental pollution.The objective of the invention is to be achieved through the following technical solutions: a kind of recycling method of coke powder, earlier following raw materials according is mixed by weight percentage: coke powder 48～72%, Wingdale 3～7%, wood chip 23～40%, water 2～5%, then mixture is put into stirrer, after stirring, put into rod-made machine, the finished product of extrusion molding is column or block coke.

Beneficial effect of the present invention: the present invention adopts such scheme, utilizes coke powder and wood chip, Wingdale, water to be mixed with column or block coke according to a certain ratio.In the process of smelting, blast furnace burden is brought the interior most of sulphur of stove into all from coke, so the size of coke sulphur content directly influences the quality of smelting the iron and steel that, the present invention has added Wingdale and has at high temperature resolved into carbonic acid gas and calcium oxide, the reaction of impurity such as the sulphur in calcium oxide and the molten iron, silicon, can remove the sulphur in the pig iron, and Wingdale can play the effect of bonding coke powder in the process of extruding.Because wood chip is more much lower than the burning-point of coke, wood chip in the synthesized hard coke at first burns, form pore and improve reactivity, wood chip has good yielding performance again, easy-formation when extruding, just can reach the purpose of regulating void content by the weight percent of regulating wood chip content, the coke of different purposes, to void content index request difference, general metallurgical coke void content requires 40～45%, foundry coke requires 35～40%, and outlet is burnt to be required about 30%.The block coke that adopts the inventive method to be prepared from can be used as metallurgical coke, foundry coke, outlet Jiao, common with burnt use, because the selling price of coke powder is very low, lower than similar coke price, bulk after synthetic or column coke do not have too big difference with the quality of normal coke, can also design the coke air channel, improve reactivity, its preparation cost is low, and make full use of waste resource, reduce environmental pollution, play the effect of energy-conserving and environment-protective.

Embodiment:

By above-mentioned weight proportion, with putting into stirrer after the raw material mixing, after stirring, put into rod-made machine, the finished product of extrusion molding is column or block coke.Wherein stirrer is selected the building industry stirrer for use, and rod-made machine is the II type rod-made machine that Central Plains, Henan Province charcoal machine factory of visitor's genus company produces.

Claims

1, a kind of recycling method of coke powder, it is characterized in that: earlier following raw materials according is mixed by weight percentage: coke powder 48～72%, Wingdale 3～7%, wood chip 23～40%, water 2～5%, then mixture is put into stirrer, after stirring, put into rod-made machine, the finished product of extrusion molding is column or block coke.