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铁水预处理工作的发展(之三) 总被引:2,自引:0,他引:2
高炉生产的炼钢铁水,在入转炉或电炉前,多经预脱硅、预脱硫和预脱磷处理,称铁水预处理。本文将简要介绍国外的铁水预磷和同时脱硫脱磷工作,为我省乃至我国钢铁冶金技术改造提供参考。 相似文献
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铁水预处理工作的发展(之二):铁水预脱硫处理 总被引:1,自引:0,他引:1
高炉生产的炼钢技术,在入转炉或电炉前。多经预脱硅,预脱硫和预脱磷处理,称铁水预处理。本文将简要介绍国外的铁水预脱硫工作,为我省乃至我国钢铁冶金技术改造提供了参考。 相似文献
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高炉生产的炼钢铁水,在入转炉或电炉前,多经预脱硅、预脱硫和预脱磷处理,称铁水预处理。本文将简要介绍国外的铁水预脱硅工作,为我省乃至我国钢铁冶金技术改造提供参考。 相似文献
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钙镁系粉剂铁水脱硫技术及经济分析 总被引:5,自引:0,他引:5
论述了钙镁系粉剂铁水脱硫的反应特点和相关喷吹方式及技术,论述了该技术对铁水脱硫处理工序和高炉生产都具有显著经济效益,其复合喷吹技术是铁水脱硫的一项灵活,可靠操作成本较低实用先进技术。 相似文献
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在概述海水淡化技术的主要应用工艺的基础上,分析了膜法海水淡化预处理工艺将气浮、沉淀、过滤等工艺组合使用的可能性。市政给水、废水处理领域的诸多工程实例表明,气浮、沉淀、过滤一体化预处理工艺,以其占地小,节省投资、运行成本等特点,在反渗透法海水淡化领域具有广阔的应用前景。 相似文献
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An combined technology of pressure pretreatment with oxygen on refractory gold ores is pointed out and discussed on this paper, according to the experiments included the test in 1kg grade batch pressure pretreatment with oxygen of the concentrate from the refractory gold ores of Dongbeizhai in Sichuan province, which is called the most refractory gold ores in China. It is shown that gold recovery reach 91.73% in the combined process which is described as follows The flotation of the sulphide gold ores is under controlled conditions, producing the concentrate for pressure pretreatment with oxygen in acidic medium and the middling for the pressure pretreatment with oxygen in alkaline medium. The thickening and washing process substitute the pressure filtration process of the pulp after pressure pretreatment. The thick slimes of the two kinds of pressure pretreatment were mixed and then enter the CIL process for simplifying the flowsheet. The possible superabundance of acid of pressure pretreatment with oxygen in acidic medium was neutralized by the tailings of flotation and the cost of neutralization will be lower. The combined technology of pressure pretreatment with oxygen has the same advantages as the normal technology of pressure pretreatment and both is helpful for environment protection. 相似文献
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影响铁水预处理镁粉消耗因素探讨 总被引:1,自引:0,他引:1
结合本钢铁水预处理生产实际,对影响铁水预处理镁粉消耗的铁水条件、钢种要求、粉剂质量、喷吹模型等因素进行探讨和分析,阐述了降低镁粉消耗的措施,对降低生产成本、提高预处理能力意义较大。 相似文献
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单喷、复喷、KR法脱硫工艺在马钢的实践分析 总被引:2,自引:0,他引:2
介绍了单喷颗粒镁、复合喷吹、KR法脱硫工艺在马钢铁水预处理中的应用实践,对3种脱硫工艺在脱硫率、回硫、温降、扒渣铁损、耗时、成本和对转炉冶炼影响及原材料设备要求进行比较,分析了各自优缺点,并对降低脱硫成本和不同条件下钢厂采用适宜的脱硫工艺提出建议。 相似文献
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某难处理金矿石中含有大量铜,如果直接氰化浸出,除了消耗大量氰化物外,还会在金表面形成一层薄膜,减慢金的溶解速度,金回收率低于30%;如果预氧化处理后再氰化提金,操作复杂、过程冗长、有污染、成本高,而且回收率并无实质性提高。为提高金回收率,降低生产成本,试验将该难处理金矿石破碎细磨后采用低浓度的NH4Cl和氨水混合浸出,利用氯离子与金形成稳定的配合物进行提金,矿石中的铜离子起氧化作用,促进金的反应,金浸出率可达87%以上。该方法无需进行预氧化处理,避免添加有毒有害药剂,消除对环境的污染。 相似文献
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为了降低铁水预处理成本,对铁水预处理过程参数进行优化,包括喷粉速率、喷枪插入深度等参数,并且在不影响脱硫效率的前提下,采用低CaO含量的钝化石灰粉替代高CaO含量的钝化石灰粉进行喷吹脱硫尝试。结果表明,钝化石灰粉消耗减少0.963 kg/t铁,镁粉脱硫效率提高6.9%,低CaO含量的钝化石灰粉不影响脱硫率。 相似文献
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This article provides a resource for choosing among available SSRIs to treat pediatric patients. SSRIs are addressed according to five areas of interest: treatment efficacy data, untoward effects profile, pharmacokinetic characteristics, potential drug-drug interactions, and cost. Strategies for SSRI dosing and pretreatment work-up are also discussed. Included in the article is a reference table for SSRI dosing, available preparations, and cost per dose. Also included is an abbreviated reference table of important cytochrome P-450 isoenzymes, isoenzyme inhibition by SSRIs, and selected psychotropic and somatic medication substrates. 相似文献