CN102943260B - 报废锌系磷化液的再生添加剂 - Google Patents

报废锌系磷化液的再生添加剂 Download PDF

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CN102943260B
CN102943260B CN201210391371.8A CN201210391371A CN102943260B CN 102943260 B CN102943260 B CN 102943260B CN 201210391371 A CN201210391371 A CN 201210391371A CN 102943260 B CN102943260 B CN 102943260B
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zinc
phosphating solution
scrapping
parts
regenerated additive
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CN102943260A (zh
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邓金玲
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Dalian Bi Cheng Environmental Protection Science And Technology Co Ltd
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Dalian Bi Cheng Environmental Protection Science And Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/86—Regeneration of coating baths

Abstract

本发明公开了一种报废锌系磷化液的再生添加剂，由成膜剂、降渣剂组成。成膜剂为磷酸二氢锌、硝酸锌；降渣剂为羟基亚乙基二膦酸。本发明在技术上克服了报废锌系磷化液的环保处理方法的不足，不需要将报废液进行转移，节省了运输成本和运输过程中易产生二次污染的风险，实现在客户现场进行再生。本发明与现有技术相比优点是可操作性强，再生效率高，可以实现长期循环使用方案，既节省能源和原材料，又有利于环保，降低劳动强度。

Description

报废锌系磷化液的再生添加剂
技术领域
本发明属于再生技术领域，具体是一种能够将报废锌系磷化液转化为新磷化液的再生添加剂。
背景技术
随着工业化的迅猛发展，锌系磷化液作为重要的金属表面前处理产品使用量越来越大，产生的报废锌系磷化液逐年上升。由于报废工业磷化液会产生“赤潮”现象，是危险化学品，不允许随意排放。目前我国处理工业报废磷化液的方法是先回收，然后进行重金属分离，再进行技术转化，处理成本较高，应用范围较窄。
发明内容
本发明的目的在于克服现有技术的不足，提供一种能够在客户现场进行再生的添加剂，不需要将报废锌系磷化液进行转移处理，通过采用再生添加剂，将报废锌系工业磷化液成功转化为新的磷化液，循环使用。
报废锌系磷化液的再生添加剂由成膜剂、降渣剂组成。
所述成膜剂由磷酸二氢锌和硝酸锌组成。
所述降渣剂为羟基亚乙基二膦酸(HEDP)。
所述磷酸二氢锌、硝酸锌、羟基亚乙基二膦酸按重量份计分别为：10～60份；20～50份；1～20份。
所述磷酸二氢锌、硝酸锌、羟基亚乙基二膦酸按重量份计分别为：40～55份；30～35份；5～10份。
本发明主要利用锌系磷化液成膜机理，磷化生产过程中由于参加成膜的物质损耗有规律可循，因此发明了一种环保锌系磷化液的再生添加剂，在工业锌系磷化液即将报废或已经报废时，适量添加，即可将其成功转化为新的磷化液，投放于工业生产中。该方法可以使锌系磷化液长期循环使用，勿需报废，无排放。既节约生产成本，又保护环境，再生过程中无二次污染产生。
本发明在技术上克服了报废锌系磷化液的环保处理方法的不足，不需要将报废液进行转移，节省了运输成本和运输过程中易产生二次污染的风险，实现在客户现场进行再生。本发明与现有技术相比优点是可操作性强，再生效率高，可以实现长期循环使用方案，既节省能源和原材料，又有利于环保，降低劳动强度。
具体实施方式
下面对本发明作进一步解释说明。
实施例1：报废高温锌系磷化液的实施方案
报废高温锌系磷化液中主要技术参数如下：
将1000L报废高温锌系磷化液中添加8～10kg复合再生添加剂（40份磷酸二氢锌、35份硝酸锌、10份HEDP），静置过滤，滤液返回磷化加工槽中，直接投入生产，滤渣回收，用于生产再生添加剂的原料。
实施例2：报废中温锌系磷化液的实施方案
报废中温锌系磷化液中主要技术参数如下：
将1000L报废中温锌系磷化液中添加6~8kg复合再生添加剂（50份磷酸二氢锌、30份硝酸锌、5份HEDP），静置过滤，滤液返回磷化加工槽中，直接投入生产，滤渣回收，用于生产再生添加剂的原料。
实施例3：报废低温锌系磷化液的实施方案
报废低温锌系磷化液中主要技术参数如下：
将1000L报废低温锌系磷化液中添加4~6kg复合再生添加剂（45份磷酸二氢锌、30份硝酸锌、8份HEDP），静置过滤，滤液返回磷化加工槽中，直接投入生产，滤渣回收，用于生产再生添加剂的原料。
实施例4：报废低温锌系磷化液的实施方案
将1000L报废低温锌系磷化液中添加4~6kg复合再生添加剂（60份磷酸二氢锌、8份HEDP），静置过滤，滤液返回磷化加工槽中，直接投入生产，滤渣回收，用于生产再生添加剂的原料。
实施例5：报废低温锌系磷化液的实施方案
报废低温锌系磷化液中主要技术参数如下：
将1000L报废低温锌系磷化液中添加6~8kg复合再生添加剂（50份硝酸锌、8份HEDP），静置过滤，滤液返回磷化加工槽中，直接投入生产，滤渣回收，用于生产再生添加剂的原料。
以上所述，仅为本发明较佳的具体实施方式，但发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明披露的技术范围内，根据本发明的技术方案及其实用新型构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (2)

1.报废锌系磷化液的再生添加剂，其特征在于：所述再生添加剂由成膜剂和降渣剂组成，所述降渣剂为羟基亚乙基二膦酸；所述成膜剂由磷酸二氢锌和硝酸锌组成，所述磷酸二氢锌、硝酸锌、羟基亚乙基二膦酸按重量份计分别为：10～60份、20～50份、1～20份。
2.根据权利要求1所述的报废锌系磷化液的再生添加剂，其特征在于：所述磷酸二氢锌、硝酸锌、羟基亚乙基二膦酸按重量份计分别为：40～55份、30～35份、5～10份。
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CN1445382A (zh) * 2003-02-21 2003-10-01 广州擎天油漆化工实业有限公司 锌、铁金属及其组件同槽磷化方法
CN101062767A (zh) * 2007-04-16 2007-10-31 邓金玲 工业报废磷化液的环保处理方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1445382A (zh) * 2003-02-21 2003-10-01 广州擎天油漆化工实业有限公司 锌、铁金属及其组件同槽磷化方法
CN101062767A (zh) * 2007-04-16 2007-10-31 邓金玲 工业报废磷化液的环保处理方法

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