洁净煤技术
潔淨煤技術
길정매기술
Clean Coal Technology
2015年
5期
31-34
,共4页
煤质特征%分选密度%工艺流程%重介质旋流器
煤質特徵%分選密度%工藝流程%重介質鏇流器
매질특정%분선밀도%공예류정%중개질선류기
coal property%separation density%technological process%heavy medium cyclone
为设计高效、先进的炼焦煤选煤厂,通过对比分析目前国内常用炼焦煤工艺,结合安泰选煤厂的原煤性质及周边矿区现有分选工艺,研究确定安泰选煤厂工艺流程,并对选煤厂应用效果进行分析. 结果表明,当分选精煤灰分为10%左右时,精煤产率均在50%以上,原煤可选性属于较难选~难选,为良好炼焦用煤. 确定安泰选煤厂工艺流程为:预先脱泥无压三产品重介质旋流器主选,1. 5 ~0. 25 mm TBS粗煤泥分选,<0. 25 mm细煤泥浮选,经浓缩压滤后回收. 分选密度稳定在1. 40 g/cm3时,TBS精煤灰分为10. 17% ~11. 71%,浮选精煤灰分为9. 28% ~10. 67%,分选精煤灰分均在10%以下. 中煤损失产率维持在1. 85% ~3. 20%,中煤发热量为23 MJ/kg以上,达到动力煤要求.
為設計高效、先進的煉焦煤選煤廠,通過對比分析目前國內常用煉焦煤工藝,結閤安泰選煤廠的原煤性質及週邊礦區現有分選工藝,研究確定安泰選煤廠工藝流程,併對選煤廠應用效果進行分析. 結果錶明,噹分選精煤灰分為10%左右時,精煤產率均在50%以上,原煤可選性屬于較難選~難選,為良好煉焦用煤. 確定安泰選煤廠工藝流程為:預先脫泥無壓三產品重介質鏇流器主選,1. 5 ~0. 25 mm TBS粗煤泥分選,<0. 25 mm細煤泥浮選,經濃縮壓濾後迴收. 分選密度穩定在1. 40 g/cm3時,TBS精煤灰分為10. 17% ~11. 71%,浮選精煤灰分為9. 28% ~10. 67%,分選精煤灰分均在10%以下. 中煤損失產率維持在1. 85% ~3. 20%,中煤髮熱量為23 MJ/kg以上,達到動力煤要求.
위설계고효、선진적련초매선매엄,통과대비분석목전국내상용련초매공예,결합안태선매엄적원매성질급주변광구현유분선공예,연구학정안태선매엄공예류정,병대선매엄응용효과진행분석. 결과표명,당분선정매회분위10%좌우시,정매산솔균재50%이상,원매가선성속우교난선~난선,위량호련초용매. 학정안태선매엄공예류정위:예선탈니무압삼산품중개질선류기주선,1. 5 ~0. 25 mm TBS조매니분선,<0. 25 mm세매니부선,경농축압려후회수. 분선밀도은정재1. 40 g/cm3시,TBS정매회분위10. 17% ~11. 71%,부선정매회분위9. 28% ~10. 67%,분선정매회분균재10%이하. 중매손실산솔유지재1. 85% ~3. 20%,중매발열량위23 MJ/kg이상,체도동력매요구.
In order to design efficient and advanced coal preparation plant,the commonly used coking processes,coal quality characteristics of Antai coal preparation plant and surrounding existing coal preparation process were investigated. The optimum coal preparation process was that,for pre-desliming and main election by three-product non pressure heavy medium cyclone,1. 5 mm to 0. 25 mm particles was de-watered by TBS coarse slime separator,For-0. 25 mm particles,the flotation was carried out first,then the flotation clean coal and tailings were recycled by pressure fliter. Actual production showed that the separation density stabilized at 1. 40 g/cm3 ,the clean coal ash was be-tween 9. 28% to 10. 67%,loss rate of medium coal was between 1. 85% to 3. 20%,the calorific value of the medium coal remained at more than 23 MJ/kg.
