The invention belongs to the technical field of surface treatment of metal materials, and specifically relates to a nitric acid mist inhibitor and its preparation method. The nitric acid mist inhibitor comprises the following components as per mass percentage: soda 12.0-18.0%, emulsifier 0.8-1.2%, sodium bicarbonate 6.4-9.6%, thiourea 0.8-1.2%, surfactant 2.4-3.6%, and residual amount of water. The preparation method of the nitric acid mist inhibitor is that soda ash, emulsifier, sodium bicarbonate powder, thiourea and surfactant are successively added in the reactor, then water is added slowly, and stirred until all the products are dissolved, and then the product is obtained. The nitric acid mist inhibitor prepared by the raw material and process provided by the invention not only meets the need of nitric acid mist suppression in the steel pickling industry, but also effectively avoids the steel loss caused by the acid pickling and the waste of the acid pickling solution.
【技术实现步骤摘要】
一种硝酸抑雾剂及其制备方法
本专利技术属于金属材料表面处理
,具体涉及一种硝酸抑雾剂及其制备方法。
技术介绍
机械、化工、冶金等行业常用酸洗来清除金属材料及设备表面的铁锈、水垢、轧制氧化皮。酸洗用酸有硫酸、盐酸、硝酸以及硫酸和盐酸的混合酸等。金属在酸洗的过程中会产生大量的酸雾,这些酸雾不仅会造成环境污染,还会腐蚀周围的车间设备、设施,甚至对人体健康产生影响。酸洗难免会腐蚀金属,为提高酸洗过后金属的质量,减少金属表面的缺陷,保护设备的材质,延长设备的使用寿命等,必须在酸洗液中添加抑雾剂和缓蚀剂。抑雾剂用于抑制酸洗过程中产生的酸雾,缓蚀剂是金属材料酸洗过程中防止材料被深度腐蚀的重要添加剂,因此研究开发使用成本低廉、抑雾效果好、缓蚀效果好、适应性强、对环境友好的抑雾剂和缓蚀剂剂,无疑具有重要的实用价值。在酸洗液中加入抑雾剂和缓蚀剂能够使金属在酸洗过程中酸雾减少,腐蚀速率明显降低,避免发生过腐蚀。研制出有效的硝酸抑雾剂对化工、冶金等行业具有重大意义。中国专利技术专利申请CN103243340A公开了不锈钢环保酸洗液,由200~500份硝酸、30~50份环保添加剂、7 ...
【技术保护点】
1.一种硝酸抑雾剂,其特征在于,包括按照质量百分比计的如下组分:纯碱12.0~18.0%,乳化剂 0.8~1.2%,元明粉6.4~9.6%,硫脲0.8~1.2%,表面活性剂2.4~3.6%,余量为水。
【技术特征摘要】
1.一种硝酸抑雾剂,其特征在于,包括按照质量百分比计的如下组分:纯碱12.0~18.0%,乳化剂0.8~1.2%,元明粉6.4~9.6%,硫脲0.8~1.2%,表面活性剂2.4~3.6%,余量为水。2.根据权利要求1所述的一种硝酸抑雾剂,其特征在于,包括按照质量百分比计的如下组分:纯碱15.0%,乳化剂1.0%,元明粉8.0%,硫脲1.0%,表面活性剂3.0%,余量为水。3.根据权利要求1或2任一项...
【专利技术属性】
技术研发人员:宋春雷,
申请(专利权)人:泉州罕韩环保科技有限公司,
类型:发明
国别省市:福建,35
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