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(19)

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2 495 731

(13)

(51)

IPC

B22C1/18(2006-01-01)

(21) (22)

Application

2012130114/02, 2012-07-16

(24)

Start date

2012-07-16

(22)

Actual filing date

2012-07-16

(45)

Published

2013-10-20

(72)

Inventor

Leushin Igor' OlegovichAlekseenko Anastasija LeonidovnaGrachev Aleksandr Nikolaevich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Tekhnicheskij Universitet Im. R.E. Alekseeva"

MIXTURE FOR MAKING CASTING MOULDS AND CORES Russian patent published in 2013 - IPC B22C1/18

Abstract RU 2495731 C1

FIELD: chemistry.

SUBSTANCE: invention relates to foundry production. The mixture contains sludge wastes from production of polyvinyl chloride in amount of 97-99 wt %, containing the following, wt %: H₂O 50.2; CaSO₄-2H₂O 12.2; Ca(OH)₂ 7.2; NaCl 28.2; NaSO₄ 2.0; NaOH 0.2 and sawdust. Crystalline hydrates of NaCl are used as binder in the mixture.

EFFECT: mixture has improved strength properties and is easily removable from moulds by dissolving the binder in water.

2 tbl, 1 ex

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RU 2 495 731 C1

Authors

Leushin Igor' Olegovich

Alekseenko Anastasija Leonidovna

Grachev Aleksandr Nikolaevich

Dates

2013-10-20—Published

2012-07-16—Filed