矿焦混装软熔透气性试验研究

包钢高炉生产实践和55米~3高炉试验表明,包钢烧结矿由于K、Na、F含量比较高,加上在高炉内的循环富集,导致炉料软熔温度低,透氧性差,冶炼强度和利用系数均较低。近几年来,矿焦混装引起了国内外炼铁界的普遍关注。苏联彼得洛夫和第聂伯冶金工厂的高炉(最大的为1386m^3)实践证明,矿焦混装可降低焦比8％,济钢高炉试验结果,矿焦混装可增产6％。

《纺织品印花皮膜柔软度试验方法》、《纺织品印花皮膜透气性试验方法》两项网版印刷团体标准制定完成

2020年7月2日,全国印刷标准化技术委员会网版印刷分技术委员会纺织品印花工作组、中国印刷技术协会网印及制像分会,在广东省中山市中山中测纺织产业技术研究中心召开了中国印刷技术协会《纺织品印花皮膜柔软度试验方法》、《纺织品印花皮膜透气性试验方法》两项网版印刷团体标准起草组工作会议,这是网版印刷标准化分技术委员会自2012年成以来首次制定相关团体标准。

Experimental study on gas permeability by adsorption under 3D-stress

Using self-developed gas-seepage experimental installation,under the sameeffective stress conditions,coal permeability experiments on different adsorption characteristicsof gases,different temperatures and different gas adsorption contents were performed,and the influence law of adsorption on coal permeability was studied.At the sametime,experimental analogy showed clearly that gas drawing plucks the permeability variationlaw.The results show that adsorption has a major impact on coal permeability.Thegreater the adsorption,the more the gas adsorption capacity and the coal permeabilitybecomes smaller.Permeability becomes smaller along with confining of pressure andtemperature,and this is in accord with local practice results.