. Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines. Fig. 224.—Plan of Bruntons Cloth. force to carry away the light particles; but the greater adhesive power ofthe grains of ore enable them to withstand it, and they remain attachedto the cloth until they are carried over the roller, and under the surfaceof the water in the tank {t) when they fall to the bottom. There are three adjustments to make for treating different natureof stuff, viz., inclination of the belt, rate of movement, and quantity. Fig. 225.—Section of Bruntons Cl
. Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines. Fig. 224.—Plan of Bruntons Cloth. force to carry away the light particles; but the greater adhesive power ofthe grains of ore enable them to withstand it, and they remain attachedto the cloth until they are carried over the roller, and under the surfaceof the water in the tank {t) when they fall to the bottom. There are three adjustments to make for treating different natureof stuff, viz., inclination of the belt, rate of movement, and quantity. Fig. 225.—Section of Bruntons Cloth. of clear water admitted. The apparatus, as generally used, is fairlyefficient, and its construction is so simple that it can be made on themine. On the German dressing floors its efficiency is increased by givingit a slight end percussive motion, but although fairly good results areobtained from it there is a very great difficulty in making the beltssufficiently durable. BRUNTONS CLOTH. 32 1 As to the amount which may be treated on this simple machine, itis not easy to fix the exact quantity, but in Spain it is found that withone such machine a sHght return pays the costs; a boy at i od. per daybeing all the labour required, while, from two such appliances, from 5to 6 tons of ore per month were obtained, containing 45 per cent. Pb.,and at a cost of \os. per ton. Before sale, however, this mineral wasfurther enriched in a dolly, or tossing tub (see fig. 221), up to 70 percent. Pb. The following are the general dimensions of this machine, and theap
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1902
