Quartz Powder

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Seller

Jyoti Minerals (Shree Padmavati Minerals and Granites Pvt. Ltd.)

India, Mumbai
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Technical characteristics

Composition of sandQuartz

Description

Natural moulding sand contains variable amount of clay, which acts as bond between the sand grains. This sand, therefore, posse strength, plasticity and refractoriness to varying extend depending upon the clay minerals present. When it contains a greater amount of clay, it is blended with river sand, which is relatively clay free so as to get the optimum properties desired in the sand mixture.

Washed grains shall be mostly sub-angular to rounded shape. As far as possible, the sand shall be free from gravel. Natural moulding sand for use in foundries shall be of three main grades, namely, A, B and C with respect to clay content.

Grade: Clay
-A: 5 to 10
-B: 10 to 15
-C: 15 to 20

According to the grain size of moulding sand, each main grade shall be divided in to II sub-grades as indicates below:

Grain Size Distribution of Molding S and
Grade	Fraction retained on I. S. Sieve (m )	% Minimum
850 / 425	850 : 600 and 425	60
600 / 300	600 / 425 and 300	60
425 / 212	425 / 300 and 212	60
300 / 150	300 : 212 and 150	60
212 / 106	212 : 150 and 106	60
150 / 75	150 : 106 and 75	60
850 / 300	850 : 600 : 425 and 300	60
600 / 212	600 : 425 : 300 and 212	60
425 / 150	425 : 300 : 212 and 150	60
300 / 106	300 : 212 : 150 and 106	60
212 / 75	212 : 150 : 106 and 75	60

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Quartz Powder

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