查询词典 zinc-plate process

Conventional alkaline cyanide zinc plating process was compulsively restricted for its emission of toxic and hurtful substances and harm to the environment and human being.

原有的碱性氰化物镀锌工艺存在有毒有害物质排放及对人体的伤害，被国家强制限制。

Based on electroplating theory, several common complex agents and additives are screened and analyzed, and the method for converting cyanide zinc plating process to cyanide-free zinc plating process is discussed. The throwing power, covering power and corrosion resistance have been tested for verifying the conversion effects.

本研究以电镀理论为依据，对现有几种常用配位剂和添加剂进行筛选和分析，探讨将氰化物镀锌工艺向无氰化转化的方法。

Moreover, the pre-treatment and post-treatment processes for the steel sheet subject to continuous zinc plating were also discussed. Results showed that the alkaline zincate plating process had many advantages over conventional alkaline cyanide zinc plating process, including high current efficiency, good throwing power, and strung adhesion strength of the coating.

结果表明，该工艺电流效率高（锌离子含量16~24g/L时，电流效率可提高约20%，镀液均镀能力好（宽度为1m的镀锌薄板，中心点厚度与边缘厚度差不大于10%，镀层结合力优良（将试片180°任意弯曲，镀层无起皮、剥落现象；在烘箱中加热至180-200℃，保温60min，冷水中急剧冷却，镀层无突起、鼓泡、剥落现象），所镀得的镀锌薄钢板适合于钝化和彩涂等后处理。

As compared with traditional zinc concentrate hydrometallurgy, the technology omitted roasting and relieving hyperacidity with fume procedure, and produced sulfur. The technology, which can decrease environmental pollution and energy consumption in the zinc metallurgical process, is a new metallurgical technology. This papers innovation is: 1 The suspension electrolyte system based on zinc sulphate solution was put forward.

通过对矿物系统的研究，我们最终得到处理硫化锌矿物的悬浮电解工艺流程，该工艺与传统的锌精矿湿法工艺相比，省去了焙烧工序和烟气制酸工序，产出元素硫，明显减少锌冶金过程的环境污染和降低锌冶金过程的能量消耗，是一个全新的新冶金工艺。

Aiming at some defects and shortages existing in conventional deferrization processes,such as jarosite,goethite and spray processes,in zinc hydrometallurgy process and using new movements abroad for reference,the study on new technology for removing iron by phosphate has been carried out and satisfactory results have been achieved.

针对湿法炼锌过程中，常规的铁矾法、喷淋法等除铁工艺存在渣量大、周期长、能耗高以及渣二次污染等缺陷和不足，并借鉴国外除铁新动向，进行了磷酸盐除铁法的试验研究，获得了较满意的结果。

Condensation product of amine and epoxychloropropane was used as additive in the traditional zincate based zinc electroplating process, and secondary brightener was added to improve deposit brightness as well.

传统锌酸盐镀锌工艺以有机胺和环氧氯丙烷的缩合物为添加剂，配合使用辅助光亮剂以提高镀层光亮度。

Based on some features in lead-zinc sintering process,such as time-delay,nonlinearity and uncertainty,a fuzzy predictive control method for burning through point was proposed.

针对具有时滞、非线性、不确定等特性的铅锌密闭鼓风烧结过程，提出一种烧穿点的模糊预测控制方法。

The fuzzy T-S model was much more precise than the neural network model for burning through point based on process parameters. The rise time and regulating time of the fuzzy predictive control method were respectively 9 min and 18 min which were both much shorter than those by using the fuzzy control method for burning through point in lead-zinc sintering process.

结果表明：模糊T-S模型能有效抑制垂直燃烧速度不确定性的影响，具有较高的辨识精度，能够满足工业现场生产指导的需要；此外，烧穿点的模糊预测控制方法比单纯的模糊控制调节时间短、超调量小，能快速有效地响应烧穿点的变化，具有一定的应用价值。

The effective temperature range of the zinc dipping process is from 0 to 40℃ and more preferably 20 to 30℃, when the temperature is below 20℃, zinc dipping time is preferably more than 30 seconds, when the temperature is above 30℃, zinc dipping time is preferably less than 30 seconds.

该浸锌液的工作温度为0～40℃，较佳温度范围为20～30℃，当温度低于20℃时，浸锌时间应在30 s以上；当温度高于30℃时，浸锌时间应小于30 s。

Zinc oxide raw materials and zinc oxide ores, containing high fluorine, chloride and iron, can 't be treated to produces electrowinned zinc by routine process. High-purity zinc using in non-mercury zinc powders is prepared only by using vacuum distillation or rectify process from zinc of the zero grade.

本文针对目前氟、氯、铁等杂质元素高的氧化锌物料、氧化锌矿常规方法难以处理以及无汞合金锌粉用高纯锌必须由0号锌用真空蒸馏或精馏法生产的问题。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。