The first method use less reagents and avoid the secondary pollution from silver salt and mercuric salt and chromium salt with short digestion time which reduce the energy.
试验过程试剂用量小，减少了银盐、汞盐、铬盐带来的二次污染问题；消解过程短，能有效降低能耗。
Pollution problem of solid hazard waste from production of chromium salt refer two aspect: the one was old slag of donkey's years' store up, the another was keeping procreant fresh slag.
铬盐生产中固体危险废物污染问题主要涉及两个方面：一是多年积存的老渣，二是不断产生的新渣。
A complete utilization new method of zero discharging chromium poison and resource is used to process the waste residue which is discharged in metal chromium and chromium salt producing process.
铬毒零排放及资源完全利用新方法，是处理金属铬和铬盐生产过程中排放的废渣。
By the reduction on industrial Chromic anhydride-methanol, the trivalent chromium main salt was made. The technological formula and standard of Chromium-Nickel alloy electroplating were given.
采用工业铬酐-甲醇还原法制备三价铬主盐，给出了电镀铬-镍合金工艺配方与工艺规范并对镀层性能进行了测试。
The current states of chromium acid salt chemical transform film, phosphorus-chromium transform treatment and in-chromium transform treatment are reviewed.
从铬酸盐化学转化膜、磷铬化法和无铬化学转化法等方面对化学转化膜的现状进行了综述。
The current states of chromium acid salt chemical transform film, phosphorus-chromium transform treatment and in-chromium transform treatment are reviewed.
从铬酸盐化学转化膜、磷铬化法和无铬化学转化法等方面对化学转化膜的现状进行了综述。
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