Show A E SLIME SLIM E concentrator WRITTEN FOR THE MINING REVIEW the great need of a slime concentrator that would save the maximum amount of slimes in a concentrating plant and at the same time be simple in construction and easy of operation has always been recognized by mill operators wherever the practice of concentration of ores is carried on the illustration shows such a machine and one that is entirely new in the field of sl imers in its design and construction are embodied features differing widely from anything heretofore introduced in concen concentrators concentrator ra of this class it is the joint invention of randall P akins and james P evans both of whom have been for a long time connected with the colorado iron works company and are well known as experienced mill builders and as having a thorough knowledge of all kinds of mill operations for nearly a year past since the machine assumed its present form it has been are substantially level the central line extending from the settling space to the discharge end of the machine is the apex and is the high line or portion of the deck from which and from the forward lines of feed and settling space the deck slopes forwardly and sidewise to the waste launders on each side the belt is preferably of canvas or duck surface and of sufficient flexibility that in passing or being drawn over the deck it conforms to the contour thereof maintaining perfectly the form of pan or depression into which the slime pulp is distributed from the feed box the water in the pan becomes comparatively quiet and the mineral constantly has an opportunity to settle aided by the gentle reciprocal cipro cal end shake and adheres firmly to the surface of the belt the pan or depression is so shaped that as the heavy mineral settles the lighter material is thrown the motion of the table and a t ni A E slime concentrator subjected to almost continuous work on all el classes asses of concentrating ores demonstrating daily its efficiency and superiority beyond peradventure of doubt under varied and actual service conditions As will be seen by the illustration the machine is of the traveling belt type with a longitudinal or endwise shake it is provided with a roller or drum at each end also a wash roller and a aake take up roller below the deck these rollers serve the purpose in their respective places of carrying impart ing the travel to washing taking up and adjusting the true travel of the belt these operating features are in a measure similar to those of a frue vanner tannei but there the similarity with that and other machines ends the great advantage of the machine lies in the form or contour of its deck which will readily be understood from an examination of the illustration with the following brief description the triangle shown is the pan or depression and the feed and settling space the flip forward lines of which bally drawn by the travel of the belt toward the discharge point of triangular feed and settling space so that the tendency is for the lighter material to come on the deck proper at the beginning of the apex where it is gradually washed toward the sides by a series of jets of water from a longitudinal and horizontal perforated pipe about twenty inches long placed immediately above the deck at the beginning of the apex following this pipe along the apex is a similar one extending to the dis charge end which supplies wash water to i the deck two independent wash water pipes are placed near the two corners at the dascha discharge rge end which have an adjustable sweep for further cleaning the concentrates when necessary the overflow from t the he feed and settling space over its level forward edges is uniform and thin as is also the flow over the sloping sides of the ma chine with the added wash water which 41 gives the maximum opportunity to settle any agitated mineral that may be traveling ng with ith the gangue toward the waste launders concentrates as will be premised are the fie carried over the end of the machine with travel of the belt which passing under the e the wash roller below the deck in water in the concentrates box are washed off by the reciprocal motion of the table bided if necessary by jets of water supplied through a perforated pipe playing on it out of the water tha be belt as comes resenting presenting a clean belt constantly as it continuously enters the feed and settling at the head of the deck the mechanical features of the machine are ire simple easily assembled and cared for fien in operation the deck or top is Up ported by si six flat oak or hickory legs our inches wide and one quarter inch thick t thinnest part these legs are amply trong and while supporting the top and re venting any side sway are sufficiently edible to allow of an easy reciprocal moon to the top the main drive shaft is located at the head or feed end and is eted with cranks on each side from which ad two side rods which in turn are at ched to the deck near supports under ie e head end and which impart the re motion or end shake on the drive laft aft are tight and loose pulleys to receive e drive from the mill shaft the tight ulley illey is cast heavy and also serves as bala balance ned wheel giving steadiness to the fotion of the table A four step cone on this shaft is belted to a similar one i a counter shaft on the supporting frame pair of bevel gears engages and trans its the power from the countershaft counter shaft rough the long side shaft to the dis large aige end of the table where by means cut gears which allow for the motion the table it is communicated to the iler her at the discharge end by a worm and orm rm wheel which in its turn imparts the avel ea to the concentrator belt the speed sing ing adjusted by shifting the belt on the ne pulleys the travel of the belt is proximately 26 33 43 and 56 inches xe re per minute as governed by these bp P cone pulleys at a speed of revo alons per minute of the drive shaft the ve e shaft can be run up to ao revola 8 per minute however without dis altage antage tage and on some ores to advantage ale means are provided for adjust the belt so that it will run true and tor for taking up the stretch I 1 he wearing parts are few and the belt last a long time and with ordinary the machine can not get out of order i floor space occupied is 7 by 16 feet att t the same as any standard concen imd and less than one horsepower horse power is d tor for operation |