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    发布时间: 2018-11-12 17:49    

微矿分离技术


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      微矿分离技术是一种从劣质煤、洗选中煤、煤泥、洗选尾煤、煤矸石及其他煤炭加工过程固体废弃物中通过特殊技术分离出清洁固体燃料/原料 (Clean Solid Fuel/Feedstock, CSF) 和土壤改良用矿物质 (Soil Remediation Minerals, SRM) 技术,属于世界领先技术。
      其过程为:将煤炭破碎后,按照特殊可选择性的粒度制成非均相流体;添加专用助剂于流体中,通过特殊分离装置将可燃物、矿物质组分最大程度的低成本分离。可燃物富含有机质组分为低硫低灰的清洁固体燃料/原料;富含矿物质组分是天然矿源的土壤改良矿物质




      煤炭经微矿分离后,变成两种主要产品:
  • 高热值的清洁固体燃料/原料 (CSF)。富含有机质组分,为低硫低灰的清洁固体燃料,可用于制备超净高能燃料或超净高能原料,或用于制备高价值的碳基材料,或加工成一种用于提高汽柴油、煤(航)油、燃料油、醇醚、天然气等各种高性价比燃料热值和能量密度的燃料添加剂等。
  • 天然矿源土壤改良用矿物质。富含矿物质组分,包含植物生长所需的重要营养矿物质及微量元素,简称土壤改良用矿物质 (SRM)。该物质经一系列化学及生化活化处理过程可生产一种新型的、富含微量元素矿物质及有机质的土壤矿物改良剂 (Soil Remediation Amendment, SRA);土壤改良用矿物质可与氮磷钾等经表面处理及化学合成可制成新型农用缓释肥料。
       采用富含微量元素矿物质及有机质的土壤矿物改良剂,预期可实现化肥产业和绿色农业的耦合,大幅提高化肥的施用肥效,使农作物实现有机生长,提高农副产品的营养成分及产量,改变农业的施肥习惯,进而恢复土壤健康程度;同时,可减少氮肥使用过程中的分解和氨的逃逸,对当前雾霾的治理具有潜在的非常积极的作用。



      采用微矿分离技术可突破传统水煤浆的三大发展瓶颈:
  • 解决传统制浆原料煤选择受限问题:该技术可用于劣质煤、洗选中煤、洗选尾煤、煤泥、煤矸石及其他煤炭加工过程固体废弃物转换为高性价比的清洁固体燃料/原料,提高煤炭利用效率,变次为好,变废为宝。有望解决我国煤炭资源化利用的结构性问题,在煤炭提质,将劣质煤炭提升为优质煤炭方面将更加实用
  • 解决传统水煤浆的污染物控制问题:制超净高能燃料/原料前将污染物分离,从源头上解决传统水煤浆燃烧造成的环境污染因素;该技术可降低或减少原煤污染物60-90%
  • 解决传统水煤浆的综合成本问题(包括制造、应用成本等):可将传统水煤浆中清洁固体燃料的浓度普遍提高,最高可达75%;在同等成本情况下,超净高能燃料/原料的热值较传统水煤浆提高10-25%;制超净高能燃料/原料前分离出来的SRM作为再生资源利用,产生附加价值



RevTech Minerals Separation Technology is a world-leading technology that is able to separate Clean Solid Fuel/Feedstock (CSF) and Soil Remediation Minerals (SRM) from both high-quality coal, low-quality coal, and washed middings, slimes, tailings, gangues and other solid wastes in coal processing industries.

There are two major products from the RevTech Minerals Separation process:

  • One is Clean Solid Fuel/Feedstock (CSF) with high calorific value, rich in organic matters, with characteristics of low sulfur and ash content. It can be used to prepare high-performance CWS fuels for boilers or feedstock slurry for gasification in coal chemical industry. It can also be used to make carbon-based material of high-value, or processed into a kind of fuel addictive in order to improve the calorific value of various high cost-effective fuels, such as gasoline, diesel, coal based aviation oil, fuel oil, alcohol ether, natural gas, etc.
  • The other one is the natural minerals for soil remediation, which is rich in mineral components and contains important nutrients and trace elements required for plant growth, referred to as Soil Remediation Minerals (SRM). The material can produce a new type of Soil Remediation Amendment (SRA) rich in trace element minerals and organic matter through a series of chemical and biochemical activation processes. Minerals for soil remediation can be made into new agricultural slow-release fertilizers by surface treatment and chemical synthesis with nitrogen, phosphorus and potassium.

The use of SRA is expected to achieve the coupling of fertilizer industry and green agriculture, greatly improve the fertilizer application efficiency, enable organic growth of crops, improve the nutrient content and yield of agricultural and sideline products, change fertilization mode of agriculture, and further to restore soil health. At the same time, it can reduce the decomposition and escape of ammonia during the use of nitrogen fertilizer, which has potentially positive effect on treatment of smog.

Using RMS Technology can break through the three major development bottlenecks of conventional CWS (Coal Water Slurry) industry.
  • Solve the problem of limited selection of coal source for slurry coal feed -- The technology can be used to convert inferior coal, washed middling coal, washing tailings, slimes, gangues  and other solid wastes in coal processing into cost-effective clean solid fuel/feedstock so as to improve coal utilization efficiency, change inferior into quality products, and turn waste into valuables. It is expected to solve the structural problems of China's coal resource utilization, and it will be more practical in upgrading coal quality and upgrading inferior coal into high-quality coal.
  • Solve the problem of pollutant control in conventional CWS -- Separate the pollutants before preparing RevFuel, and solve the environmental pollution factors caused by the conventional coal water upgrading inferior coal into high-quality coal slurry combustion from the source. This technology can reduce or decrease raw coal pollutants by 60-90%.
  • Reduce the comprehensive cost of conventional CWS, including manufacturing, application costs, etc. -- The concentration of CSF in the slurry could be generally increased in comparison with conventional CWS, up to 75% in maximum. At the same production cost, the caloricity of RevFuel is 10-25% higher than that of conventional CWS. The SRM could be used as a renewable resource to generate added value.