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This method is reproducible and simple and thus can be readily scaled up for industrial production.
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Until now, however, industrial production of PHAs has encountered only limited success.
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Effects of reaction time, temperature, solvents, catalysts and feeding molar ratio on the yield and quality of products were investigated, and an improved procedure suitable for industrial production was established.
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Carbon-based solid phase containing open and closed multiwalled carbon nanotubes (up to 5% of the total carbon) was found in the waste from industrial production of metallic lithium by electrolysis of lithium chloride melt with graphite electrodes.
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The other technique leans upon the traditional technology commonly adopted in an industrial production of the above chloramines and includes, in addition to the earlier existing steps, a step we proposed for purifying waste water.
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| | The powder injection under reducing atmosphere would efficiently dephosphorize the moltensteel with bigh chromium content (over 13%) without oxidation. Through the industrial experiments with 5ton and 15ton melts it has been proved that IRD isa successful process for making stainless steel with high phosphorus scrap returns. The basic principles of dephosphorization under reducing atmosphere are discussed. Under suchconditions calcium reacts with phosphorus and produces calcium phosphide: 3(Ca)~++2(P)... | | 本文采用还原条件下喷射粉末的喷射还原脱磷法(IRD),可在保持高铬含量(>13％)不受氧化的条件下有效地脱除钢液中的磷。经5吨和15吨钢液的工业性试验,可以顺利地介决高磷返回料冶炼不锈钢的操作工艺。本文探讨了还原脱磷的基本原理,在特定的条件下钙与磷生成磷化钙的脱磷反应;3{Ca}十2[P]→(Ca_3P_2),喷射冶金促进了这一反应的工业应用。作者认为采用喷射还原脱磷将为工业应用中一种提高质量的手段。 | | 文摘来源 | | Indium solution of poor concentration was prepared by soaking copper refinery ash in sulfuric acid. P204 was used to extract and recover metal In of purity as high as 98%. Guided by the complex stability theory we have succeeded in choosing mixture solution of H_2SO_4+NaCl as washing agent and making satisfactory separation of In from Bi. The washing agent circulates in a closed loop in the process. Extraction equipments adopted in the pilot-scale experiment can be applied in industrial production$... | | 从火法炼铜烟灰的硫酸浸出贫铟溶液中,用P-204萃取回收了金属铟,纯度为98％。以络合物稳定性理论作指导,成功地选择了H_2SO_4+NaCl的混合溶液为洗杂剂,实现了铟和铋的良好分离,洗杂剂在流程中,实现了闭路循环。中型实验所采用的萃取设备,具有工业上的应用价值。P-204萃取回收铟的工艺,很好地适应了铜烟灰综合利用总流程的需要。 | | 文摘来源 | | The ball-bearing steel ZGCr15 was used for the study. The steel was deoxidizod in nine different ways (A1 0.5kg/t, A11kg/t, A1 1.5kg/t, Ca 1kg/t, Mn 1kg/t, Ca-Si 1kg/t, Si-Mn-Ca 7kg/t, AMS 10kg/t, Ce-La 0.Skg/t) and some heats without any addition of deoxidant in order to obtain different types of inclusions in casted consumable electrode. The tests show that the removal of nonmetallic inclusions by the ESR process is influenced by the composition and the sire of original inclusions in the consumable electr... | | 研究工作选用滚珠轴承钢进行,冶炼采用十种不同终脱氧制度(A10.5kg/t、A11kg/t、A11.5kg/t、Ca1kg/t、Mn1kg/t、Ca-Si1kg/t、Si-Mn-Ca7kg/t、AMS10kg/t、Ce-La0.5kg/t及不进行终脱氧,使铸造电极获得不同类型的原始夹杂物。试验结果表明:电渣重熔过程去除非金属夹杂物受到电极中原始夹杂物成分及尺寸的影响。因此电渣钢中非金属夹杂物的总量、形态及化学成分在一定范围内可精确控制。一般地说,低熔点、大颗粒原始夹杂物通过电渣重熔易去除,因为它们易于扩散到钢渣界面,与炉渣接触后为炉渣所吸收。实验表明:自耗电极钢冶炼用Si-Mn-Ca及AMS脱氧具有最好精炼效果。在工业炉上生产结果证实上述结论。 | | 文摘来源 | | | | << 更多相关文摘 |
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