By analyzing the solution for chemical treatment, technological character and film property, the existing problem and the studying direction of each technology for the future are indicated.
通过对这些方法中化学处理溶液的性质、工艺特点以及膜层性能进行分析，指出了各方法存在的问题以及今后研究的方向。
The main treatment methods of spent electroless nickel plating solution include chemical deposition, catalytic reduction, electrolysis, ionic exchange, etc.
化学镀镍废液的处理方法主要有化学沉淀法、催化还原法、电解法、离子交换法等。
The raw material undergo chemical treatment and dilution for the modified tall oil pitch binding material to be obtained. and its dilute solution is used as a core binder for foundry use.
以浮油沥青为原材料，经化工处理、稀释后成为改性浮油粘结剂。可以作为铸造用型、芯砂的粘结剂。
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