CN103242874A - Process for coking by blending fly ashes - Google Patents

Abstract

The invention provides a process for coking by blending fly ashes. The process comprises the following steps: blending the fly ashes and fat coal in a weight ratio of 1:8 in ton; conveying the mixed material to a grinder for grinding through a belt, wherein the rotation speed of the grinder is 4200 revolutions/minute; falling the ground fat coal into a lower conveying belt from a feed opening to be transported to a storage tank for later use, wherein the fat coal is 1890# coal mined in Ewirgol in Xinjiang, is extremely strong in coal dissolving inert capability and has cohesive property of 102.

Description

A kind of dedusting ash is returned and is joined the technology of using coking

Technical field

The present invention relates to the coal-blending coking technology, the dedusting ash that produces during coking is produced is returned the method for joining, and effectively plays energy-saving and cost-reducing production effect.

Background technology

Usually coking subsidiary factory of ironmaking branch office dedusting ash output is higher, its physical property is very special, can not carry out coal-blending coking according to conventional theory, cause dedusting ash not disappear the road and tank farm stock raises gradually, and dedusting ash density is little, granularity is little, floor space is bigger in stacking process, and airborne dust very easily, contaminate environment, the more important thing is needs cost manpower and material resources to manage, and has increased production cost.

The present invention's utilization rationally is considered to industrial refuse " dedusting ash ", with rich coal, i.e. 1890 coal hybrid combinations. namely do not change the coal characteristic of 1890 coals, taken full advantage of the inert component characteristic of dedusting ash, reduced coal blending cost, saved the fat coal resource, the energy-saving and cost-reducing technical support that provides of enterprise has been provided.

Summary of the invention

The objective of the invention is to: taken full advantage of the inert component characteristic of dedusting ash, reduced coal blending cost, saved the fat coal resource, do not changed rich coal again, namely the bonding characteristic of 1890 coals is beneficial to the raising of consumption reduction and production capacity again.

The object of the present invention is achieved like this: a kind of dedusting ash is returned and is joined the technology of using coking, dedusting ash is mixed with ton weight ratio 1:8 with rich coal, be delivered in the pulverizer through belt and pulverize, its pulverizer rotating speed is 4200 rev/mins, and the rich coal after the pulverizing falls into the bottom belt conveyor from feed opening, and to be transported to storage tank standby;

Wherein rich coal is No. 1890 coals of Xinjiang Ai Weier ditch exploitation. the molten lazy ability of coal is very strong, and cohesiveness reaches 102.

Know-why of the present invention and effect: (fineness, ash, fugitive constituent are higher to the physical property of dedusting ash, no adhesion) and the coal blending structure of top dress coke oven fully analyze the back and determine, under guaranteeing that coke quality is without any situation about changing, in 1890 coals (rich coal) with addition of a certain amount of dedusting ash, not only given full play to the strong cohesive property effect of 1890 coals, and taken full advantage of the inert component characteristic of dedusting ash, reduced by 1890 coals the amount of allocating into, reduced coal blending cost, saved the fat coal resource, show technical progress.

  

Embodiment

The invention will be further described below in conjunction with embodiment.

Adopt the method that is equipped with coal and top dress coking by coke oven behind the first powder: dedusting ash+rich coal (1890 coal) mixes unloading-conveying belt-pulverizer-storage tank-join jar.

Dedusting ash is mixed with ton weight ratio 1:8 with rich coal, enter pulverizer simultaneously through the belt conveying, this pulverizer and belt transportation system are worked simultaneously, and the pulverizer main shaft rotating speed is 4200 rev/mins, and 1890 coals are pulverized, especially wherein the fragmentation of macrobead coal charge, have easily and mix, mixed 1890 coals have fallen into the bottom belt conveyor after feed opening comes out, be transported in the storage tank by belt, after the discharging of storage tank feed opening, finally be transported to again join the jar standby.

Technique effect of the present invention: returning dosage dedusting ash day is 40 tons, and the cost value of 1890 coals is 1040 yuan, namely reduces cost by the coal-blending coking moon 124.8 ten thousand yuan.

1890 coals that the present invention selects for use are the self-produced rich coal in eight Ai Weier of steel company ditch collieries, and the fundamental characteristics characteristic is: 1890 coals belong to rich coal, and its coal index is as follows:

This coal is that coking coal group of Xinjiang Bayi Iron ﹠ Steel Co., Ltd. of Baosteel Group Corporation is at the coal of Ai Weier ditch exploitation, because its sea level elevation is 1890m, so group internal called after 1890 coals.

The pulverizer that the present invention selects for use is produced by big river, Yangzhou.

Claims (1)

1. a dedusting ash is returned and is joined the technology of using coking, it is characterized in that: dedusting ash is mixed with ton weight ratio 1:8 with rich coal, be delivered in the pulverizer through belt and pulverize, its pulverizer rotating speed is 4200 rev/mins, and the rich coal after the pulverizing falls into the bottom belt conveyor from feed opening, and to be transported to storage tank standby;

Wherein rich coal is No. 1890 coals of Xinjiang Ai Weier ditch exploitation. the molten lazy ability of coal is very strong, and cohesiveness reaches 102.