Research on Operation Techniques of 35t / h Fluidized Bed Boilers Firing Washed Coal Silt

35t/h 洗煤泥流化床锅炉运行技术的研究

In coal jigging washing process coal is washed in suspension composed of coal slime and water .

在跳汰生产工艺中，煤炭是在由 煤泥和水组成的悬浮液中进行分选的。

Only washed coal or high quality and low sulfur content coal can be allowed to directly use by boilers for space heating and production .

对于采暖及生产锅炉直接燃煤，必须使用优质低硫 煤或经 洗选的煤炭；

The ratio of coal washed by dense medium system rapidly increases and the technology of coal cleaning by use of dense medium cyclone has been developed at high speed ;

重介质 选煤比例迅速上升，重介质旋流器 选煤技术发展迅速；

With increase of rainfall pollutants in coal gangue are gradually washed away by rain water the concentration of pollutants reduces in leaching liquid and the amounts of pollutants released from coal gangue are attenuated in a negative exponential law ;

尤其是Na+溶解释放速率更快，以后随着降水量的增加，煤矸石中的污染物逐渐 被降雨 淋滤水量带走，淋滤液中各污染物质量浓度逐渐降低， 煤矸石中污染物的淋溶释放呈指数曲线规律衰减；

With improvement of the market situation the price of washed coal maintains at a high level . The coal of these two layers is mixed washing with coal of other layers .

随着市场形势好转， 精煤价格较高，这两层煤与其它煤层混合入洗， 灰分、硫分都能满足用户的需要。

Optimization Test on the Structural Parameter of Separating Box where Impurity Is Washed away from Extract Coal

洗 精煤杂物分离箱结构参数的优化试验

Economic and Effective Method for Solving Pollution of Boiler-Burning Washed Coal

燃用 洗 选煤是解决锅炉污染的经济有效方法

Although the coal resources is rich but the scarce coal content for cooking such as cooking coal and fat coal is less thus enhancing its mining recovery at the same time the washed coal recovery should be increased .

虽然我国煤炭资源丰富，但用于炼焦的焦煤、肥煤等稀缺煤种含量较少，资源短缺，因而在提高其采出率的同时，应提高其 精煤回收率。

A non-contact isotopic ash measuring device and a multi-slurry analysis device were designed and realized to detect ash contents of raw coal washed coal and rest coal respectively in flotation process .

设计并实现了非接触式的同位素煤浆 灰分检测装置及多流分析装置，能同时检测原、精、尾 煤的灰分。

As well as the washed coal compared to the main product there is a high ash content of these by-products : high-sulfur high moisture and low heat .

与 洗 精煤主产品乃至 原煤相比，这些副产品灰分高、硫分高、水分高而发热量低。

The results of the flotation experiments shows that the ash content of the washed coal is only half of the coal slurry flotation without comminution by high pressure water jet and the total sulfur content is 20 present .

试验结果表明，高压水射流粉碎 过的煤泥浮选后其精煤的灰分含量为煤泥直接浮选 精煤含量的一半，全硫含量仅为煤泥直接浮选精煤含量的五分之一。

In spot checking when the ash yield of raw coal is controlled below 33 % 50 % of slack coal can be washed and the economic benefits of washing slack coal with different ratios are anlysised .

经过现场检测，将 原煤灰分控制在33%以下，可实行末煤50%入 洗。并给出了不同比例末煤入洗时的经济效益测算。

The technical reformation and practice of dewatering process of washed fine anthracite coal

无烟 洗粉 煤脱水工艺技术改造及实践

Study result is shown that boiler efficiency increasing 5 % ~ 10 % pollution emission decreasing 30 % ~ 50 % operation cost without changed if adopted to burn washed coal and boiler transformation . This method may widely use in middle and small cities .

结果表明工业锅炉燃用 洗 选煤与锅炉改造配合，可提高锅炉效率5%～10%，减少污染物排放30%～50%，运行成本变化不大，适宜在广大中小城市广泛应用。

Study on Oxidation Nature of Washed Coal for Coke - making

炼焦 精煤氧化性质的研究

As it has the advantages of low cake moisture high filtering coefficient low energy consumption and strong capability of recovering fine materials the equipment has become a focal one that is to be developed for the dewatering of ore concentrate and washed coal .

由于该设备具有滤饼水分低、过滤系数高、能耗低、回收细粒级物料能力强等优点，已经成为精矿、 精煤脱脱水的重点发展设备。

Other pollutants after all are essentially impurities which can be washed from the coal or filtered out of the flue gas .

毕竟那些可以从 煤炭中或 烟道气体中滤除的其他污染物质本身就是杂质。

So the relations of washed coal ash and ratio must be balanced and technology reformation works of floatation system would be done to increase ratio and economic benefits .

建议要平衡 好 精煤灰分与产率的关系，并拟进行浮选系统的技术改造工程以进一步提高 精煤产率及经济效益。

In this paper the optimization aims of implementing coal preparation plant CIMS and their embodiments in the design of washed coal are expounded . The model of optimal design of coal preparation product based on quality function deployment is put forward . A simulation example shows its efficiency .

给出了实施选煤厂CIMS的优化目标及其在 精煤设计中的体现，提出了基于质量功能配置的洗选产品优化设计模型，通过一个仿真实例说明了该方法的有效性。

The brief introduction to the process flow and equipment of the newly built whole section sampler for washed coal in Anshan Iron and Steel Complex is given .

介绍了鞍钢新建 洗 精煤全断面采样装置的工艺流程、设备概况；

Industrial test of sintering with washed low ash coal

低灰份 太西 洗煤 用于烧结的工业性试验