SU417392A1 - - Google Patents

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Publication number
SU417392A1
SU417392A1 SU1622624A SU1622624A SU417392A1 SU 417392 A1 SU417392 A1 SU 417392A1 SU 1622624 A SU1622624 A SU 1622624A SU 1622624 A SU1622624 A SU 1622624A SU 417392 A1 SU417392 A1 SU 417392A1
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SU
USSR - Soviet Union
Prior art keywords
hours
hour
cooling
holding
heat treatment
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Application number
SU1622624A
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Russian (ru)
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.)
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Publication date
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Priority to SU1622624A priority Critical patent/SU417392A1/ru
Application granted granted Critical
Publication of SU417392A1 publication Critical patent/SU417392A1/ru

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Description

1one

Известен способ получени  керамзита, включающий формовку гранул, последующую сушку, обжиг их и охлаждение.There is a known method for the production of expanded clay, which includes the molding of granules, the subsequent drying, their firing and cooling.

Однако по такому способу керамзит имеет недостаточную механическую прочность и огнеупорность .However, according to this method, expanded clay has insufficient mechanical strength and refractoriness.

Цель изобретени  - устранение указанных недостатков.The purpose of the invention is to eliminate these disadvantages.

Дл  этого полученный керамзит после охлаждени  обрабатывают ортофосфорной кислотой в течение 2-4 час, а затем подвергают сушке в течение 4-24 час при температуре 15-25°С и повторной термообработке по следующему режиму: нагрев от 15-25 до 105°СTo do this, the obtained clay after cooling is treated with phosphoric acid for 2-4 hours, and then subjected to drying for 4-24 hours at a temperature of 15-25 ° C and repeated heat treatment in the following mode: heating from 15-25 to 105 ° C

СО скоростью 60-80°С/час, выдержка при температуре 105°С в течение 1-3 час, последующий нагрев со скоростью 60-80°С/час до 500-650°С и выдержка при 500-650°С в течеиие 4-8 час.With a speed of 60-80 ° C / hour, holding at a temperature of 105 ° C for 1-3 hours, subsequent heating at a speed of 60-80 ° C / hour to 500-650 ° C and holding at 500-650 ° C for a period of 4-8 hours

Обработку керамзита производ т 70%-ной ортофосфорной кислотой. В результате последующей термообработки на гранулах образуетс  оболочка, состо ща  из фосфатов кремни , алюмини  и магни , обладающа  повышенными прочностными и огнеупорными свойствами.Claydite is processed with 70% phosphoric acid. As a result of the subsequent heat treatment on the granules, a shell is formed consisting of phosphates of silicon, aluminum and magnesium, possessing enhanced strength and refractory properties.

Результаты испытаний керамзитового грави  представлены в таблице. Полученный керамзит позвол ет значительно снизить вес бетонов нри одновременном повышении их прочностных свойств и огнеупорности . Способ может быть использован на заводах промышленностн строительных материалов . Предмет изобретени  1. Способ получени  керамзита, включающий формовку гранул, последующую сушку, обжиг их и охлаждение, отличающийс  тем, что, с целью повышени  механической прочности и огнеупорности, полученный керамзит после охлаждени  обрабатывают ортофосфорной кислотой в течение 2-4 час, а затем подвергают сушке в течение 4-24 час при температуре 15-25 С и повторной термообработке . 2. Способ по п. I, (J т .11 и ч а ю щ и ii с   тем, что повторную термообработку керамзпча производ т по следующему режиму: нагрев от 15-25 до 105°С со скоростью бО--80С./час, выдержка при температуре 105°С в течение 1-3 час, последующий нагрев со скоростью 60-80°С/час до 500-650°С и выдержка при 500-650°С в теченпе 4-8 час.The test results of expanded clay gravel are presented in the table. The resulting claydite can significantly reduce the weight of concrete at the same time increasing their strength properties and fire resistance. The method can be used in factories industrial building materials. The subject of the invention 1. A method for producing expanded clay, which includes the molding of granules, subsequent drying, burning and cooling, characterized in that, in order to increase mechanical strength and refractoriness, the obtained clay after cooling is treated with phosphoric acid for 2-4 hours, and then subjected drying for 4-24 hours at a temperature of 15-25 C and re-heat treatment. 2. The method according to p. I, (J t. 11 and h a y i and ii with the fact that re-heat treatment of expanded clay is carried out according to the following mode: heating from 15-25 to 105 ° C with speed C - 80 C. / hour, holding at a temperature of 105 ° C for 1-3 hours, subsequent heating at a speed of 60-80 ° C / hour to 500-650 ° C and holding at 500-650 ° C for 4-8 hours.

SU1622624A 1971-02-08 1971-02-08 SU417392A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1622624A SU417392A1 (en) 1971-02-08 1971-02-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1622624A SU417392A1 (en) 1971-02-08 1971-02-08

Publications (1)

Publication Number Publication Date
SU417392A1 true SU417392A1 (en) 1974-02-28

Family

ID=20466138

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1622624A SU417392A1 (en) 1971-02-08 1971-02-08

Country Status (1)

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SU (1) SU417392A1 (en)

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