SU326854A1

SU326854A1 - Method of preparing solutions of manganese salts

Info

Publication number: SU326854A1
Application number: SU6901312527A
Authority: SU
Inventors: С.С. Марков; В.М. Маркова; М.Н. Мапулкин; Н.А. Бондарчук; А.Д. Лесин; В.Е. Косотуров; Т.В. Лапшина; Е.А. Бамбулевич; И.М. Вульфович; И.Ф. Богданова
Original assignee: Крымский Филиал Государственного Ордена Трудового Красного Знамени Института Прикладной Химии
Priority date: 1969-03-18
Filing date: 1969-03-18
Publication date: 1978-03-15

Description

Изобретение относитс к технологии полчени солей марганца, используемых дл приготовлени электролитов, из которых электролизом выдел ют металлический марганец и его двуокись.The invention relates to the technology for the production of manganese salts used to prepare electrolytes, from which manganese metal and its dioxide are separated by electrolysis.

Известньй способ получени растворов солей марганца путем обработки кусков марганцевой руды и ферромарганца соотвегствующей кислотой, обладает ведостаткамв , к которым относ тс длительностьThe limestone method of obtaining solutions of manganese salts by treating pieces of manganese ore and ferromanganese with the corresponding acid has a major effect, which is the duration

прсщесса растворени марганца в каслоте, невыссжа степень извлечени его из исходных продуктов, взрывоопасность прсадесс за счет выделени значительного колн ест ва водорода при растворении ферромарганца в кислом растворе.the process of dissolving manganese in caslottes, the degree of its extraction from the initial products, the explosivity of the process due to the release of a significant amount of hydrogen by dissolving the ferromanganese in an acidic solution.

С целью устранени указанных ведостатксв предлагаетс куски марганцевой руды и ферромарганца, крупность которых в 2-5 раз больше крупности кусков руды,In order to eliminate these vedostatksv offers pieces of manganese ore and ferromanganese, the size of which is 2-5 times the size of the ore,

предварительно совместно измельчать в водной среде до крупности кусков менее 250 меш, затем обрабатывать соогветствуюшей кислотсй, количество которой на 1-10% меньше стехиометрического, а дл pre-co-grind in an aqueous medium to a lump size of less than 250 mesh, then process the corresponding acid, the amount of which is 1-10% less than stoichiometric, and for

св зывани ионов кальци , содержащихс в исходных компонентах, добавл ть серную кислоту в количестве 100-300% от необходимого по,стехиометрии. Чтобы исключить присутствие в растворе солей двухвалентного железа, выделение водорода в газовую фазу и наличие в шламе металлического марганца, в смесь подают на 1-30% меньше ферромарганца, чем необходимо по реакции Мп Мп 2 ЛЦ,the binding of calcium ions contained in the starting components, add sulfuric acid in the amount of 100-300% of the required, stoichiometry. In order to exclude the presence of ferrous iron salts in the solution, hydrogen evolution into the gas phase and the presence of metallic manganese in the sludge, 1-30% less ferromanganese is fed into the mixture than is necessary by the reaction Mn Mn 2 LC,

По предлагаемс лу способу получени растворов солей марганца, не содержашнх вредных примесей ион(ж железа и кальци , происходит за 15-ЗО мин практвчес к без выделени водорода. Извлечение марг ца ИЗ исходного сырь 9О-Э8%.According to the proposed method of obtaining solutions of manganese salts, no ion-containing harmful impurities (iron and calcium, occurs in 15-ZO mines practically without hydrogen evolution. Extraction of minerals FROM the raw material 9O-E8%.

Claims

Example. Crushing 28.5 g of ferrous manganese (composition,%: Mn 0 Mn 70.5 - 75, c; Fe 2 O-24.4; Ca 0.0) in 64.9 g of manganese ore (composition,%: E 46, 8; MP O 2 5O; S10213 (Ca 2.5; Mg-Oe Fe 2.5) to the size of pieces 2 and 0.5 mm, respectively, dispense them in such a way, so that the ratio between margins, soyvrymyms in ferromanganese and containing R ore was O, 98; 1, and loaded into the mill, which serves 93 ml of water, creating a connection between the solid and liquid phase, equal to 1: 1. The suspension, after grinding of which the residue on the 165 μm sieve is 0.1-0.2%, and on the 60 μm sieve 1-4%, the mixture containing hydrochloric acid is treated with a mixture of 313 g / l in the amount necessary for 98% of manganese found in the ore and ferromanganese and sulfuric acid in the amount of 12O% is from the stohymetric content of calcium in the ore. HERA 10 -14 when the pH of the pulp becomes 3-3.5, 97-98% of manganese goes into solution, and all the iron is in the sediment in the form of ferric hydroxide. There is no emission of hydrogen and chlorine into the gas phase at 8TOM. The manganese chloride solution is separated from the sludge consisting mainly of SiOi, Fe (OH) 3 and, and for final purification from calcium the content of vfapranua chloride 04050 g / l is evaporated, after gypsum in the form of gypsum filters. . Claims The method of obtaining solutions of manganese salts by treating pieces of manganese ore and ferromanganese with an appropriate acidic acid, distinguished by that. That, in order to facilitate and accelerate the process of dissolving manganese in acid, increasing its degree of extraction and ensuring explosion safety during grinding of ferromanganese, pieces of ore and pieces of ferromanganese, which are 2-5 times larger than the size of couscous ore, are preliminarily co-grinding in water to size lumps of less than 25O mesh, then co-geotecting acid in an amount 1-10% less than stoichiometric and sulfuric acid in an amount of 100-300% of stoichiometry with respect to impurities are fed into the aqueous pulp of grinding products. calcium.