除尘灰在烧结过程中的综合利用

Comprehensive utilization of dust in sintering process

孟祥福

东北特钢集团北满特殊钢有限责任公司

摘　要

进入二十一世纪以来,我国钢铁行业发展迅猛,在钢产量增加的同时,冶金粉尘产生量也急剧增加。冶金粉尘中主要含有铁、锌、铅等有价元素,如果不加以回收利用,不仅浪费了大量的可回收利用资源,而且会给周围环境造成较大的污染。因此,研究冶金粉尘的综合利用,可以充分利用冶金粉尘中的各种有价元素,获得一定的经济效益,同时消除粉尘堆放造成的环境污染,取得经济效益、环境效益和社会效益的同赢。本文主要研究烧结过程中如何对除尘灰的综合利用,试验以北钢实际生产过程中产生的粉尘为原料,根据北钢高炉干法除尘灰、电炉除尘灰、转炉湿法除尘,含铁、碳高、低的各自特点,将各种除尘灰按一定的比例混合后,在烧结配料中以三种不同的配比方式参加总配料比,即1%、3%、5%,按照比例配入后在一定的温度范围内(1000±100℃)进行烧结试验。主要考察烧结后成品矿的品位、碱度稳定率、返矿率,确定了合适的配比方案。试验结果表明,北钢的高炉干法除尘灰、电炉除尘灰和转炉除尘污泥在其他条件不变的情况下,混合后的除尘灰配比在3%时,烧结矿品位稳定在55%-56%、碱度稳定率90%以上、返矿率在18%以下,有效降低烧结矿成本。

关键词

除尘灰；品位；碱度；返矿率；成本

分类号

TF046.4；X757

栏　目

专业论坛

出　处

《冶金与材料》2016年第5期，第 63-66 页（共 4 页）

出版日期

2016-10-15

知网数据

下载 319 次，被引 14 次（截至 2026-09-29）

Abstract

The steel industry has been developing very fast since entering into the 21 st century.Metallurgical dust amount is also increasing sharply with the increase of steel output.The main contents of metallurgical dust are valuable elements like Fe,Zn and Pb.If they are not recovered,not only will lots of recoverable resources be wasted,but also the environment will be polluted heavily.So I chose the study on comprehensive utilization of metallurgical dust as the subject,aiming at using sufficiently all valuable elements in metallurgical dust and gaining a certain economic benefit,meanwhile eliminating environmental pollution caused by dust pilingup,and gaining economic,environmental and social benefits.The study on comprehensive utilization of metallurgical dust in Beigang is mainly introduced in this paper.Raw material for the test is metallurgical dust produced during the actual production in Beigang.In view of the high iron content and some low carbon content in dust from blast furnace with dry process & from electric arc furnace& from wet dust-trapping of converter,the dust was mixed according to a certain proportion,participated in in sintering burden in three different ways in total ratio is 1%,3%,5%,according to a certain temperature range( 1000±100 DEG C).It mainly studies the grade of finished ore,basicity stability and return fines ratio.The experimental results show that the dry dedusting ash,blast furnace steel furnace dust and dust sludge in the other conditions remain unchanged,the mixed dust in the ratio of 3%,the grade of sinter 55%~56% and basicity stability in the stable rate above 90%,returns rate below 18%,the cost is reduced per ton ore.

Keywords

Dust; Grade; Alkalinity; Return rate; Cost

知网全文（电脑版） 知网公开页

“知网全文（电脑版）”需登录中国知网或在已订购知网的机构 IP 内访问；“知网公开页”无需登录即可查看摘要，并可按知网规定下载全文。