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EFFECT OF THE COMBINED RINSING METHOD IN DECANTATION PROCESS OF THE MAGNESIUM HYDROXIDE PRECIPITATE ON MASS FRACTION OF B 2 O 3 : bachelor thesis

机译：复合冲洗法对氢氧化镁沉淀过程中B 2 O 3质量分数的影响：本科毕业论文

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U radu je ispitivan utjecaj kombiniranog načina ispiranja taloga magnezijeva hidroksida u postupku dekantacije na maseni udjel B 2 O 3 u kalciniranom magnezijevu oksidu iz morske vode. Dodatak dolomitnog vapna, kao taložnog sredstva, iznosio je 80% od stehiometrijski potrebne količine. Cilj rada je utvrditi učinkovitiji način ispiranja taloga magnezijeva hidroksida u postupku dekantacije kako bi se značajnije smanjio sadržaj B 2 O 3 u kalciniranom magnezijevom oksidu. Rezultati ispitivanja pokazuju da primjena zalužene destilirane vode pH vrijednosti 12,50 u prvim fazama ispiranja taloga magnezijeva hidroksida u kombiniranom postupku značajnije djeluje na smanjenje masenog udjela B 2 O 3 u konačnom produktu u odnosu na zaluženu destiliranu vodu pH vrijednosti 11,50. Ispitivanja također pokazuju da bi kombinirani način ispiranja uz primjenu destilirane vode u prvim fazama u kombiniranom postupku ispiranja taloga magnezijeva hidroksida trebao biti 2+3, tj. nakon dvokratnog ispiranja destiliranom vodom trebalo bi slijediti ispiranje zaluženom destiliranom vodom pH vrijednosti 12,50 do tri puta.

机译：本文研究了the析过程中浸出氢氧化镁沉淀物的联合方法对海水煅烧氧化镁中B 2 O 3的质量分数的影响。作为沉淀剂的白云石石灰的添加量为化学计量要求量的80％。本文的目的是确定一种在倾析过程中洗涤氢氧化镁沉淀物的更有效方法，以显着降低煅烧氧化镁中B 2 O 3的含量。测试结果表明，与pH 11.50的沥滤蒸馏水相比，在联合工艺中第一步浸出氢氧化镁沉淀物时使用pH值为12.50的沥滤蒸馏水对降低最终产品中B 2 O 3的质量分数具有显着效果。测试还表明，在洗涤氢氧化镁沉淀物的联合过程中，在第一步中使用蒸馏水的联合洗涤方法应为2 + 3，即。用蒸馏水冲洗两次后，应再用pH 12.50至3的碱性蒸馏水冲洗。

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Popec Kristina;
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EFFECT OF THE COMBINED RINSING METHOD IN DECANTATION PROCESS OF THE MAGNESIUM HYDROXIDE PRECIPITATE ON MASS FRACTION OF B 2 O 3 : bachelor thesis

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