Development of dust collection and removal technology of comprehensive mechanized excavation face

To solve the problem of excavation face dust control,the theory of dust removal after collection was put forward.Through a large number of theoretical and experimental researches,a new wind screen dust-collection system which was applied to comprehen- sive excavation face was developed.To set a wind dam in jet stream box,achieve the function of multi-stage and multiple-level regulation,lots of experimentation was carried out to obtain higher jet stream velocity with the minimum loss of energy.Experiments show that the slit width in the exports of wind screen dust-collection system should be 10 to 15 mm.For the general excavation roadway,after wind attenuation,the velocity can be greater than 3 m/s at the roof which meets the requirements of respirable dust control.

滤筒除尘器与布袋除尘器在玻璃厂中的应用比较

对玻璃厂使用的布袋式除尘器及滤筒式除尘器进行全面比较,提出高效环保、节能、投资少的滤筒式除尘器应作为玻璃厂除尘的首选。

稳定烧结矿碱度的生产实践

烧结矿碱度是指烧结矿中碱性氧化物与酸性氧化物的比值,其表达式通常采用的是二元碱度,即CaO/SiO_(2)。烧结矿碱度稳定率是烧结矿质量的主要衡量标准之一,对高炉稳定顺行及经济技术指标有重要影响。邯钢炼铁部2号烧结机烧结矿碱度稳定率在85%左右,为进一步提高烧结矿碱度稳定率,本文结合2号烧结生产具体情况,对影响碱度稳定率的因素进行了分析,提出了减少烧结矿碱度波动的应对措施。通过加强对混匀料换堆、除尘灰配加方式、电子皮带秤校秤、熔剂监管、取样化验和熔剂调整的管理,使2号烧结机烧结矿碱度稳定率提升到90%。