IPC classes for russian patent Crude mixture for making expanded clay. RU patent 2513804. (RU 2513804):
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FIELD: chemistry.
SUBSTANCE: crude mixture for making expanded clay contains, wt %: montmorillonite clay 84.0-90.3, spent grains from wine and cognac production 0.7-1.0, pyrophyllite 9.0-15.0.
EFFECT: high strength of expanded clay made from the crude mixture.
1 tbl
The invention relates to compositions of raw mixes for production of expanded clay, which can be used as lightweight and durable aggregate for concrete.
Known raw material mixture for the production of expanded clay contains, mass%: clay raw materials 97,5-98,5; Barda wine-cognac production of 1.5-2.5 [1].
The objective of the invention is increasing the strength of expanded clay obtained from the raw mix.
The technical result is achieved by the fact that raw mix for the manufacture of expanded clay, clay-containing raw materials and Barda wine-cognac production, as the clay raw materials contains clay of montmorillonite and advanced - pyrophyllite in the following ratio of components, mass%: clay of montmorillonite 84,0-90,3; Barda wine-cognac production 0,7-1,0; pyrophyllite 9,0-15,0.
The table shows the composition of the raw mix.
Components
Composition, wt.% 1 2 3
Clay of montmorillonite 84,0 87,15 90,3
Barda wine-cognac production 1,0 0,85 0,7
Pyrophyllite 15,0 12,0 9,0
Compressive strength, MPa about 5 about 5 about 5
In the composition of the raw material mixture for the production of claydite can be used clay of montmorillonite, including Al-montmorillonite and Fe-montmorillonite (nontronite); can be used Barda wine-cognac production in the form of sludge generated in the result of the filter drinks, after fermentation.
The montmorillonite clay mixed with crushed to a powder, pyrophyllite, add Barda wine-cognac production and preparing of raw mixture. The resulting mixture with humidity 22-26% is formed into pellets the size of 20-40 mm, which are dried and fired at a temperature of 1000-1100 C.
Source of information
1. SU 116492, C04B 14/10 1985.
Raw mix for the manufacture of expanded clay, clay-containing raw materials and Barda wine-cognac production, characterized in that, as the clay raw materials contains clay of montmorillonite and advanced - pyrophyllite in the following ratio of components, mass%:
clay of montmorillonite
84,0-90,3
Barda wine-cognac production 0,7-1,0
pyrophyllite
9,0-15,0
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