SU567487A1 - Method of obtaining absorbing mass for trapping platinoids - Google Patents

Method of obtaining absorbing mass for trapping platinoids

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Publication number
SU567487A1
SU567487A1 SU7402033628A SU2033628A SU567487A1 SU 567487 A1 SU567487 A1 SU 567487A1 SU 7402033628 A SU7402033628 A SU 7402033628A SU 2033628 A SU2033628 A SU 2033628A SU 567487 A1 SU567487 A1 SU 567487A1
Authority
SU
USSR - Soviet Union
Prior art keywords
mass
weight
strength
hours
calcium oxide
Prior art date
Application number
SU7402033628A
Other languages
Russian (ru)
Inventor
М.М. Караваев
Е.М. Салей
Э.Г. Мумчян
В.М. Олевский
В.И. Атрощенко
А.Я. Лобойко
А.Д. Тихоненко
И.Н. Олейник
М.Т. Ивахненко
Д.А. Алексеенко
Л.В. Музыченко
В.А. Молчанов
Е.И. Морковкин
К.И. Присяжнюк
Original Assignee
Предприятие П/Я Р-6603
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Application filed by Предприятие П/Я Р-6603 filed Critical Предприятие П/Я Р-6603
Priority to SU7402033628A priority Critical patent/SU567487A1/en
Application granted granted Critical
Publication of SU567487A1 publication Critical patent/SU567487A1/en

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Claims (3)

. .f.t 31, , , ... J6 При осуществлении предложенного способа сухую размельченную окиеь кальци  обрабатывают водным 2-22°/о-ным раствором хлористоводородной кислоты, тщательно перемещивают в смесител х до образовани  в зкой, тестообразной массы, из которой формуют гранулы разнообразной формы, стрем сь придать им наиболее развитую геометрическую поверхность. Полученные гранулы сущат в течение 2-3 ч при 150-200°С, а затем прокаливают при 900-;950°С в течение 2-3 ч, причем разогрев и охлаждение печи ведут вместе с загруженной массой. Пример 1. 100 г окиси кальци  обрабатывают 160 мл 3%-ного водного раствора НСЕ (т. е. при отношении веса раствора к весу СаО, равном 1,6). Замес осуществл ют вручную , формование - через ручной щприц. Сущку провод т при 200°С в течение 3 ч, а прокаливание - при 950°С в течение 2 ч. Прочность полученной массы после ее охлаждени  в печи составл ет 581 кг/см. Влагоустойчивость - вес массы при. нахождении на воздухе при- 18-22°С - увеличиваетс  за 15 дней на 0,544 г или на 9,0%. В аналогичных услови х вес массы, полученной известным способом, увеличиваетс  на 13,6%, а прочность ее составл ет 400 кг/см 2. Пример 2. После обработки 100 г окиси кальци  10%-ным раствором кислоты, вз тым в количестве 160 мл, сущки гранул при 200°С в течение 2 ч и прокаливании при 950°С в течение 2 ч, получают массу, прочность которой после охлаждени  в печи составл ет 650 кг/см 2. Влагоустойчивость массы увеличиваетс  за 15 дней на 0,315 г или на 5,6%. В аналогичных услови х вес массы, полученной известным способом, увеличиваетс  на 10%, а прочность ее составл ет 560 кг/см2. Пример 3. 25 г окиси кальци  обрабатывают 25 мл 16%-ного водного раствора сол ной кислоты (при отношении раствора к окиси кальци , равном 1,0). Замес, формование , сушку и прокаливание массы провод т , как в примерах 1 и 2. Готова  масса сохран ет достаточно высокую прочность и форму при хранении на воздухе при 18-22°С и относительной влажности 70-90% в течение четырех мес цев. Масса, полученна  известным способом, при хранении в указанных услови х разрушаетс  через 15-20 дней. Полученна  предложенным способом масса обладает улавливающей способностью, отвечающей требовани м промышленности, при повышенной прочности и влагоустойчивости . Формула изобретени  1.-Способ получени  поглотительной массы дл  улавливани  платиноидов, включающий обработку окиси кальци  раствором св зующего, например хлоридным, формование смеси, сушку и прокаливание полученного продукта, отличаюш,ийс  тем, что, с целью повышени  механической прочности и влагоустойчивости поглотител , в качестве св зующего используют водный раствор хлористоводородной кислоты. 2. Способ по п. 1, отличаюи ийс  тем, что берут 2-22%-ный раствор хлористоводородной кислоты при весовом отношении последней к окиси кальци  от 1 до 2. Источники информации, прин тые во внимание при экспертизе: 1.Авторское свидетельство СССР №199111, кл. С 01 В 21/38, 1966. . .ft 31, ..., J6 In the implementation of the proposed method, powdered, powdered calcium oki is treated with an aqueous 2-22 ° / о solution of hydrochloric acid, carefully transferred in mixers until a viscous, pasty mass is formed, from which granules of various shapes are formed forms, trying to give them the most developed geometric surface. The obtained granules are present for 2-3 hours at 150-200 ° C, and then calcined at 900-; 950 ° C for 2-3 hours, and the heating and cooling of the furnace is carried out together with the loaded mass. Example 1. 100 g of calcium oxide are treated with 160 ml of a 3% aqueous solution of HCE (i.e., the ratio of the weight of the solution to the weight of CaO is 1.6). The kneading is carried out manually, the molding is carried out through a hand syringe. Drying was carried out at 200 ° C for 3 hours and calcination at 950 ° C for 2 hours. The strength of the resulting mass after it was cooled in an oven was 581 kg / cm. Moisture resistance - weight weight at. being in air at 18-22 ° C - increases in 15 days by 0.544 g or by 9.0%. Under similar conditions, the weight of the mass obtained in a known manner increases by 13.6%, and its strength is 400 kg / cm2. Example 2. After processing 100 g of calcium oxide with a 10% acid solution, taken in an amount of 160 ml of the granule substance at 200 ° C for 2 hours and calcining at 950 ° C for 2 hours, a mass is obtained, the strength of which after cooling in the oven is 650 kg / cm2. The moisture resistance of the mass increases in 15 days by 0.315 g or by 5.6%. Under similar conditions, the weight of the mass obtained in a known manner increases by 10%, and its strength is 560 kg / cm2. Example 3. 25 g of calcium oxide are treated with 25 ml of a 16% aqueous solution of hydrochloric acid (with a ratio of calcium oxide to 1.0). The kneading, molding, drying and calcination of the mass is carried out as in Examples 1 and 2. The prepared mass retains sufficiently high strength and shape when stored in air at 18-22 ° C and a relative humidity of 70-90% for four months. The mass obtained in a known manner, when stored under these conditions, is destroyed after 15-20 days. The mass obtained by the proposed method has a trapping ability that meets the requirements of industry, with increased strength and moisture resistance. Claim 1. — A method for producing an absorbent mass to trap platinoids, including treating calcium oxide with a binder solution, such as chloride, molding the mixture, drying and calcining the resulting product, is characterized in that, in order to improve the mechanical strength and moisture resistance of the scavenger, as a binder, an aqueous solution of hydrochloric acid is used. 2. The method according to p. 1, characterized by the fact that they take a 2-22% solution of hydrochloric acid with a weight ratio of the latter to calcium oxide from 1 to 2. Sources of information taken into account during the examination: 1. USSR author's certificate №199111, cl. From 01 to 21/38, 1966. 2.Авторское свидетельство СССР № 276022, кл. С 01 В 33/24, 1969. 2. USSR author's certificate number 276022, cl. From 01 to 33/24, 1969. 3.Авторское свидетельство СССР № 424416, кл. С 01 В 21/38, 1969.3. USSR author's certificate number 424416, cl. From 01 to 21/38, 1969.
SU7402033628A 1974-06-13 1974-06-13 Method of obtaining absorbing mass for trapping platinoids SU567487A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7402033628A SU567487A1 (en) 1974-06-13 1974-06-13 Method of obtaining absorbing mass for trapping platinoids

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Application Number Priority Date Filing Date Title
SU7402033628A SU567487A1 (en) 1974-06-13 1974-06-13 Method of obtaining absorbing mass for trapping platinoids

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SU567487A1 true SU567487A1 (en) 1978-10-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003015888A2 (en) * 2001-08-20 2003-02-27 Pryvatna Firma 'sit' Method of platinum particles recovery from reaction gas in the process of nitric acid production and granular composite material for recovery of such particles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003015888A2 (en) * 2001-08-20 2003-02-27 Pryvatna Firma 'sit' Method of platinum particles recovery from reaction gas in the process of nitric acid production and granular composite material for recovery of such particles
WO2003015888A3 (en) * 2001-08-20 2003-09-12 Pryvatna Sit Fa Method of platinum particles recovery from reaction gas in the process of nitric acid production and granular composite material for recovery of such particles
US6899746B2 (en) 2001-08-20 2005-05-31 Pryvatna Firma “Sit” Method of platinum particles recovery from reaction gas in the process of nitric acid production and granular composite material for recovery of such particles

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