超高压弹性压榨压滤机的研发与应用

    Development and application of the ultra-high-pressure elastic pressing filter press

    • 摘要: 为实现煤泥深度脱水并促进煤泥压滤脱水技术高效节能发展,基于提高压榨压力可以有效降低煤泥滤饼水分理论,创新设计了“弹性滤板+油缸直接压榨”脱水技术路线,采用“多油缸压紧+内嵌式滤布安装+超高压弹性压榨”一体化技术,成功研发了GTY型超高压弹性压榨压滤机,并在尔林兔煤矿选煤厂成功投入工业应用。通过采用油缸直接压榨和弹性边框密封挤压等关键技术,超高压弹性压榨压滤机滤饼压榨压力可达10 MPa,滤饼厚度可达70 mm。在尔林兔煤矿选煤厂应用结果表明,超高压弹性压榨压滤机可完全取代原有的“隔膜压滤机+热力烘干”煤泥脱水工艺,单机设备处理能力在40 t/h以上,并可将滤饼水分降至20.0%以内,提高了煤泥产品发热量,经济效益良好。超高压弹性压榨压滤机的研制创新了煤泥压滤脱水技术,为煤泥深度脱水提供了一个新的技术途径。

       

      Abstract: To achieve deep dewatering of coal slime and promote the energy-efficient advancement of coal slime pressure filtration technology, an innovative dewatering approach combining elastic filter plates with direct hydraulic cylinder pressing was designed. This methodology is grounded in the principle that increasing compression pressure effectively reduces moisture content in coal slime filter cakes. By integrating three core technologies—multi-cylinder pressing, embedded filter cloth installation, and ultra-high-pressure elastic compression—the GTY ultra-high-pressure elastic filter press was successfully developed and implemented at the Erlintu coal mine preparation plant. Through key technologies including direct hydraulic pressing and elastic frame-sealed extrusion, this filter press achieves a cake compression pressure of 10 MPa with cake thickness reaching 70 mm. Application results at Erlintu coal preparation plant demonstrate that this equipment can fully replace the original "membrane filter press + thermal drying" process. With a single-unit processing capacity exceeding 40 t/h and the ability to reduce filter cake moisture below 20.0%, it significantly enhances the heating value of coal slime products while delivering substantial economic benefits. The development of this ultra-high-pressure elastic filter press represents an innovation in coal slime pressure filtration technology, offering a new technical pathway for deep dewatering of coal slime.

       

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