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Hexavalent chromium reducing agent and preparation method thereof
The invention relates to a hexavalent chromium reducing agent and a preparation method thereof, wherein the hexavalent chromium reducing agent comprises the following components in parts by weight: 10-15 parts of ferrous ions, 3-7 parts of stannous ions, 1-4 parts of tin ash, 5-10 parts of a dispersant, 8-12 parts of a stabilizer, and 45-60 parts of a solvent. According to the hexavalent chromiumreducing agent provided by the invention, stannous oxide and zero-valent tin in tin ash are extracted, so that the reducing ions interact with sodium tripolyphosphate, citrate and other dispersants and stabilizers easily dissolved in a solution so as to avoid or reduce the use of high-purity reagents, reduce the production cost and stabilize stannous ions, ferrous ions and zero-valent tin, and thezero-valent tin in the tin ash has a certain reduction effect, can be used for adjusting the pH value of the solution, inhibiting the hydrolysis reaction of the stannous ions, promoting the concentration of the stannous ions in the solution and reducing the usage amount of a reducing agent.
本发明涉及一种六价铬还原剂及其制备方法。所述六价铬还原剂包括按份计的以下组分：亚铁离子10‑15份；亚锡离子3‑7份；锡灰1‑4份；分散剂5‑10份；稳定剂8‑12份；溶剂45‑60份。本发明提供的六价铬还原剂通过提取锡灰中的亚锡及零价锡，使还原离子与三聚磷酸钠、柠檬酸盐等易溶于溶液的分散剂及稳定剂相互作用，一方面可以避免少使用高纯试剂，降低生产成本，使亚锡离子、亚铁离子、零价锡稳定存在，另一方面锡灰中的零价锡，自身除具备一定的还原效果外，还可以调节溶液pH，抑制亚锡离子的水解反应，促进溶液中亚锡离子的浓度，降低还原剂使用量。
Hexavalent chromium reducing agent and preparation method thereof
The invention relates to a hexavalent chromium reducing agent and a preparation method thereof, wherein the hexavalent chromium reducing agent comprises the following components in parts by weight: 10-15 parts of ferrous ions, 3-7 parts of stannous ions, 1-4 parts of tin ash, 5-10 parts of a dispersant, 8-12 parts of a stabilizer, and 45-60 parts of a solvent. According to the hexavalent chromiumreducing agent provided by the invention, stannous oxide and zero-valent tin in tin ash are extracted, so that the reducing ions interact with sodium tripolyphosphate, citrate and other dispersants and stabilizers easily dissolved in a solution so as to avoid or reduce the use of high-purity reagents, reduce the production cost and stabilize stannous ions, ferrous ions and zero-valent tin, and thezero-valent tin in the tin ash has a certain reduction effect, can be used for adjusting the pH value of the solution, inhibiting the hydrolysis reaction of the stannous ions, promoting the concentration of the stannous ions in the solution and reducing the usage amount of a reducing agent.
本发明涉及一种六价铬还原剂及其制备方法。所述六价铬还原剂包括按份计的以下组分：亚铁离子10‑15份；亚锡离子3‑7份；锡灰1‑4份；分散剂5‑10份；稳定剂8‑12份；溶剂45‑60份。本发明提供的六价铬还原剂通过提取锡灰中的亚锡及零价锡，使还原离子与三聚磷酸钠、柠檬酸盐等易溶于溶液的分散剂及稳定剂相互作用，一方面可以避免少使用高纯试剂，降低生产成本，使亚锡离子、亚铁离子、零价锡稳定存在，另一方面锡灰中的零价锡，自身除具备一定的还原效果外，还可以调节溶液pH，抑制亚锡离子的水解反应，促进溶液中亚锡离子的浓度，降低还原剂使用量。
Hexavalent chromium reducing agent and preparation method thereof
一种六价铬还原剂及其制备方法
XING WANWAN (author) / YANG LIRONG (author) / CHEN SHAN (author) / ZHAN NI (author) / TONG HAO (author) / XIANG CONGYANG (author) / HUANG KAI (author)
2020-05-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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