Obtaining process of additivated sodic bentonite for use in composition of green sand for molding of cast parts and resulting product
AssigneeCoque Do Sul Do Brasil Ltda
InventorArnaldo Romanus
Life of this patent
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Abstract
Composition and process of a composition of additivated sodic bentonite through the addition of dextrin and sugar (saccharose), preferably refined sugar, or starch and sugar (saccharose), preferably refined sugar, in specific quantities during the process of calcic bentonite activation by means of incorporation of sodium carbonate into the in natura ore, belonging to the field of chemical industry for use in the composition of green sand for cast molding, offering a wide range of advantages in comparison with the existing formulas.
Claims11
1-3. (canceled)
Additivated sodic bentonite for use in composition of green sand for molding of car parts, comprising:
- in natura sodic bentonite, and
- an addictive selected from the group consisting of:
- dextrin and sugar, and starch and sugar,
- wherein the addictive is added during the process of transforming calcic bentonite into sodic bentonite when incorporating the sodium carbonate into the in natura sodic bentonite.
A process for obtaining an additivated sodic bentonite for use in composition of green sand for molding of car parts, the process comprising incorporating sodium carbonate into in natura sodic bentonite with an additive selected from the group consisting of:
- dextrin and sugar, and starch and sugar;
- transforming calcic bentonite into sodic bentonite.
Dependencies are inferred from the claim text.