SU676556A1 - Magnesium hydroxide producing method - Google Patents

Magnesium hydroxide producing method

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Publication number
SU676556A1
SU676556A1 SU731982320A SU1982320A SU676556A1 SU 676556 A1 SU676556 A1 SU 676556A1 SU 731982320 A SU731982320 A SU 731982320A SU 1982320 A SU1982320 A SU 1982320A SU 676556 A1 SU676556 A1 SU 676556A1
Authority
SU
USSR - Soviet Union
Prior art keywords
magnesium hydroxide
producing method
precipitation
coating
sulfate solution
Prior art date
Application number
SU731982320A
Other languages
Russian (ru)
Inventor
Дмитрий Фридрихович Ризе
Татьяна Федоровна Кулькова
Николай Иосифович Лапкин
Александр Сергеевич Матюгин
Полина Михайловна Одношевина
Родольф Борисович Пужевич
Василий Иванович Кислицын
Original Assignee
Предприятие П/Я А-7125
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-7125 filed Critical Предприятие П/Я А-7125
Priority to SU731982320A priority Critical patent/SU676556A1/en
Application granted granted Critical
Publication of SU676556A1 publication Critical patent/SU676556A1/en

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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

щают, промывают декантацией от остатков гипса и подают на центрифугу.Slipped, washed by decantation from the remnants of gypsum and served on a centrifuge.

Влажный осадок (4,7 т) сушат, получа  1 т порошкового продукта, содержащего 0,86 т Mg(OH)2 и 0,06 т гидроокиси хрома или гидроокиси никел , или гидроокиси цинка, или гидроокиси железа, или гидроокиси алюмини .The wet cake (4.7 tons) is dried, yielding 1 ton of a powder product containing 0.86 tons of Mg (OH) 2 and 0.06 tons of chromium hydroxide or nickel hydroxide, or zinc hydroxide, or iron hydroxide, or aluminum hydroxide.

Введение добавок меньше, чем 12%, значительно снижает их диспергирующее вли йие на гидроокись магни ; а более 25% отрицательно вли ет на адгезию покрыти  к металлу, что приводит (при последующих операци х) к образованию дефектов грунтового сло  покрыти  трансформаторной стали.The introduction of additives less than 12% significantly reduces their dispersing effect on magnesium hydroxide; and more than 25% adversely affect the adhesion of the coating to the metal, which leads (in subsequent operations) to the formation of defects in the soil layer of the coating of transformer steel.

Вли ние добавок на свойства гидроокиси магни  показано в таблице.The effect of the additives on the properties of magnesium hydroxide is shown in the table.

Применение покрыти  из Mg(OH)2, получаемой согласно изобретению, на 5-10% снижает удельные потери в стали и на 7- 10% повышает магнитную индукцию.The application of the Mg (OH) 2 coating obtained according to the invention reduces the specific steel loss by 5-10% and increases the magnetic induction by 7-10%.

Claims (2)

1. Способ получени  гидроокиси магни  дл  защитного покрыти  трансформаторной стали, включающий известковое осаждение гидроокиси магни  из раствора сульфата магни  с последующим их разделением, отличающийс  тем, что, с целью улучщени  электроизол ционных свойств покрыти  за счет уменьщени  размера частиц, в раствор сульфата магни  перед известковым осаждением ввод т добавку сернокислой соли металла, выбранного из р да хром, никель, цинк, железо, алюминий.1. A method of producing magnesium hydroxide for a protective coating of transformer steel, including lime precipitation of magnesium hydroxide from a magnesium sulfate solution and their subsequent separation, characterized in that, in order to improve the electrical insulation properties of the coating by reducing the particle size, magnesium sulfate solution before lime The sulfate salt of a metal selected from chromium, nickel, zinc, iron, and aluminum is added by precipitation. 2. Способ по п. 1, отличающийс  тем, что указанную добавку используют в количестве 12-25%.2. A method according to claim 1, characterized in that said additive is used in an amount of 12-25%. Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination 1. Авторское свидетельство СССР Wo 295400, кл. С OIF 5/22, 1973.1. USSR author's certificate Wo 295400, cl. From OIF 5/22, 1973.
SU731982320A 1973-12-28 1973-12-28 Magnesium hydroxide producing method SU676556A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU731982320A SU676556A1 (en) 1973-12-28 1973-12-28 Magnesium hydroxide producing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU731982320A SU676556A1 (en) 1973-12-28 1973-12-28 Magnesium hydroxide producing method

Publications (1)

Publication Number Publication Date
SU676556A1 true SU676556A1 (en) 1979-07-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU731982320A SU676556A1 (en) 1973-12-28 1973-12-28 Magnesium hydroxide producing method

Country Status (1)

Country Link
SU (1) SU676556A1 (en)

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