Results 71 to 80 of about 10,426 (103)
Teshugang, 2017 The chemical composition of semi-steel after extracted-vanadium from hot metal with 4. 28% 〜5. 02% C and 0. 19% ~0. 24% V is 3. 30% - 3. 80% C and ≤0. 037% V.
韩宇, 张明博, 王鹏, 张东
doaj
, 2009 我国是二氧化碳（CO2）排放大国，建立适合我国国情的低成本、低环境风险CO2减排技术体系，是解决我国温室气体CO2排放问题的迫切需求，也是世界范围内CO2减排技术的科技前沿。利用含钙、镁的大宗固体废弃物通过矿物碳酸化反应固定CO2即能够实现多点源排放的CO2就地加工成固体形式封存起来，又可以实现固体废弃物的资源化利用，对我国发展循环经济也具有重要意义。本文针对我国钢铁行业产生大量冶金固体废渣无法有效利用的现状，提出了利用钢渣间接碳酸化固定CO2联产碳酸盐产品新工艺，系统开展了新工艺的强化碳酸化 ...
包炜军
core
保护渣中SiO_2、Al_2O_3、CaO、MgO、TFe的 X 荧光光谱分析
, 1983 一、前言冶金浇铸过程中,纲夜上面漂浮着夹杂物。为了提高钢锭的质量,人们加入不同类型的保护渣,以吸收和溶介钢液面上的浮渣。目前,国内分析保护渣中各元素含量,多是采用原子吸收和化学分析法。本文主要讨论用VRA一20R入荧尤光谱仪,分析我所保护渣样品中二氧化硅,三氧化二铝、氧化钙 ...
李杜若, 谢桂荣
core
, 2011 单嘴真空精炼装置是一种新型的炉外精炼设备。采用80 t单嘴真空精炼装置进行了127炉脱碳工业试验,试验结果表明,单嘴真空精炼装置可以获得较好的脱碳效果,试验最低碳质量分数为10×10-6。主要介绍了单嘴精炼装置的试验情况,分析了钢包底吹气体流量、钢包内渣层厚度、钢包自由空间高度、脱碳时间、钢水温度及成分对脱碳效果的影响 ...
张永亮 +5 more
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Gongye shui chuli以提高钢渣资源化利用和深度降解有机污染物为研究目标，通过改变氨气煅烧温度制备了系列钢渣/氮掺杂改性活性炭复合材料，并用于催化过硫酸钠处理罗丹明B（RhB）废水。同时采用N2吸附/脱附、XRD、XPS等手段对复合材料的孔结构和表面性质进行了表征。结果表明：氮元素的引入可改善复合材料中活性金属与活性炭之间的相互作用，从而提高复合材料的催化活性。以最优复合材料60%GZ/AC-N800为研究对象，在反应温度为35 ℃、PS加量为2 g/L和宽pH（3~11）操作条件下，反应30 min后罗丹明B（100 mg/
黄艳 +6 more
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Teshugang, 2016 Since the phosphorus content in hot metal at Shuisteel is up to 0. 104% ~ 0. 157% , the 30#~ 80#SWRH82B, ER70S-6, SWRCH22A and 40Cr etc high quality steels are melted by 100 t top and bottom combined blown converter using double-slag operation to reduce ...
李正嵩 +5 more
doaj
[Expert consensus on the implementation of enhanced recovery after surgery in percutaneous endoscopic interlaminar lumbar decompression/discectomy (2020)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2020 The Group Of Minimally Invasive Spinal Surgery And Enhanced Recovery Professional Committee Of Orthopedic Surgery And Enhanced Recovery Association Of China Rehabilitation Technology Transformation And Promotion.
europepmc +1 more source
Study on Edge Defects of Rolling 304L Stainless Steel
Teshugang, 2019 Vertical continuous casting is used to produce 304L stainless steel in a domestic plant, but edge cracks are easy to form in the rolling process. By means of chemical composition analysis, microstructural observation, energy spectrum analysis and high ...
韩立豪 +4 more
doaj
[Chinese Expert Consensus on Next Generation Sequencing Diagnosis for Non-small Cell Lung Cancer (2020 Edition)]. [PDF]
Zhongguo Fei Ai Za Zhi, 2020 Chinese Society of Clinical Oncology +1 more
europepmc +1 more source