洁净煤技术
潔淨煤技術
길정매기술
CLEAN COAL TECHNOLOGY
2015年
3期
48-50
,共3页
介耗%重介质旋流器%脱介筛%末煤系统
介耗%重介質鏇流器%脫介篩%末煤繫統
개모%중개질선류기%탈개사%말매계통
medium consumption%dense medium cyclone%spraying screen%slack processing system
针对长平选煤厂末煤系统介耗高的问题，以介质流通各环节为基础，从介质的技术耗损和管理耗损2方面对介耗高的原因进行分析，提出了改造措施。结果表明，末煤介质回收系统不完善，磁选机回收效果差，矸石带走大量介质，脱介筛脱介效果差，磁铁矿粉质量不合格，磁铁矿粉的储运、添加方式不合理等是造成长平选煤厂末煤系统介耗高的主要原因。通过在脱介筛入料溜槽内加装缓冲板，在脱介筛入料端加装挡煤皮，在脱介筛中部加装1道喷水；在溢流方箱内加设10块2 mm 筛网，对物料进行预脱介；在主厂房合介桶旁边建浓介池，缩短加介管路；加强磁铁矿粉管理，严控磁铁矿粉质量等措施对长平选煤厂进行改造，使选煤厂末煤介耗由2.0 kg / t 降至1.5 kg / t，全年节约介质费用90.09万元。
針對長平選煤廠末煤繫統介耗高的問題，以介質流通各環節為基礎，從介質的技術耗損和管理耗損2方麵對介耗高的原因進行分析，提齣瞭改造措施。結果錶明，末煤介質迴收繫統不完善，磁選機迴收效果差，矸石帶走大量介質，脫介篩脫介效果差，磁鐵礦粉質量不閤格，磁鐵礦粉的儲運、添加方式不閤理等是造成長平選煤廠末煤繫統介耗高的主要原因。通過在脫介篩入料霤槽內加裝緩遲闆，在脫介篩入料耑加裝擋煤皮，在脫介篩中部加裝1道噴水；在溢流方箱內加設10塊2 mm 篩網，對物料進行預脫介；在主廠房閤介桶徬邊建濃介池，縮短加介管路；加彊磁鐵礦粉管理，嚴控磁鐵礦粉質量等措施對長平選煤廠進行改造，使選煤廠末煤介耗由2.0 kg / t 降至1.5 kg / t，全年節約介質費用90.09萬元。
침대장평선매엄말매계통개모고적문제，이개질류통각배절위기출，종개질적기술모손화관리모손2방면대개모고적원인진행분석，제출료개조조시。결과표명，말매개질회수계통불완선，자선궤회수효과차，안석대주대량개질，탈개사탈개효과차，자철광분질량불합격，자철광분적저운、첨가방식불합리등시조성장평선매엄말매계통개모고적주요원인。통과재탈개사입료류조내가장완충판，재탈개사입료단가장당매피，재탈개사중부가장1도분수；재일류방상내가설10괴2 mm 사망，대물료진행예탈개；재주엄방합개통방변건농개지，축단가개관로；가강자철광분관리，엄공자철광분질량등조시대장평선매엄진행개조，사선매엄말매개모유2.0 kg / t 강지1.5 kg / t，전년절약개질비용90.09만원。
In order to decrease medium consumption of slack coal processing system in Changping coal preparation plant,taking each link which consumed medium as research object,the causes of large medium consumption were analyzed from technology level and management level. The results showed that,imperfect medium recovery system of powder coal,poor effects of spraying screen and magnetic separator, nonstandard daily management of magnetite powder led to high medium consumption. The above problems were reformed by installing buff-er board in chute of spraying screen,setting up coal retaining plate at the inlet of spraying screen,adding spraying process in the middle of spraying screen,installing 10 pieces of 2 mm screen mesh in overflow launder,preremoving medium,building concentrated medium storage tank near the mixed medium bucket in the main plant,shortening medium addition pipe,regulating magnetite powder quality and use man-agement. After transformation,the medium consumption reduced from 2. 0 kg/ t to 1. 5 kg/ t,lower the production cost and increased the e-conomic benefits.
