Instead of depositing the material in each bin in the form of a pile or cone, as explained, so that it will accumulate in inclined strata representing different periods of operation, the material may be deposited in each bin in any other formas, for example, in the vertical compartments shown in the modified arrangement illustrated in Fig. 5. Thus the material representing the first period of time of the operation of the crushing plant may be deposited in the first compartment at the left, and when said compartment is full notification will be oifered by overflow,<a href="http://www.sellercrusher.com/solutions/how-to-crush-malachite.html">how to crush malachite</a> whereupon the valve for the first opening 7 of the leg 40 will be opened to fill the second compartment, and so on. In removing the material from such a bin through all of the rollerfeeds it will be observed that the material as it falls upon the belt 16 from each of 'the vertical compartments will be representative of the several periods of operation of the crushing plant in which the bin in question was being supplied with the material. The same general result is secured in one case as in the other, and any other arrangement of bins and forms of deposits can be utilized by which the result desired may be obtained. From the stock-house the material which has been thus averaged is carried by the belt 21 and deposited in the bin or receptacle 22 or 23, this operation being effected so as to keep said bins properly supplied with material.
Assuming the bin 22 to contain cement-rock in a perfectly averaged condition from a known deposit, the assay of which has been determined by the chemist by making an assay of the samples as explained, the rollerfeed for said bin is operated and material is withdrawn therefrom to fill the receptacle 26, and the weight of this material is determined by the scales 28. The'chemist knowing the assay of the cement-rock in the receptacle 26,<a href="http://www.sellercrusher.com/solutions/dolomite-mining-in-quarry.html">dolomite mining in Quarry</a> it is only necessary therefore to operate the roller-feed 25 for the bin 23 and to accumulate in the receptacle 27 a sufficient amount of limestone as to result in a mixture of which a Portland cement of the desired quality can be obtained. When a sufficient amount of limestone has been accumulated in the receptacle 27, the roller-feed 25 for the bin 23 is stopped and both materials are deposited through the hoppers 30 into the mixer 31, where an intimate mixing of the two materials is eifected, after which the mixed materials are allowed todrop out of the mixer into the hopper 32, from which they are deposited from the roller-feed 33 onto the conveying-belt 34 and are carried to a suitable stock-house ready for further operation.