Transactions . ing is done, the lownr setis replaced and the upper temporary bars pulled, allowing the contentsof the producer to settle. This operation permits very little disturbance ofthe different fuel beds and is an effective system of cleaning fires. It hasalso great simplicity of both apparatus and operation. These producersare blown with jet blowers of the Schuette & Koerting type. In both, 852 GAS-PRODUCER PRACTICE AT WESTERN ZINC PLANTS hand poking through the top is used to keep the beds open and burn-ing uniforml3^ Fig. 2 shows grouping of these producer units. Threeblo
Transactions . ing is done, the lownr setis replaced and the upper temporary bars pulled, allowing the contentsof the producer to settle. This operation permits very little disturbance ofthe different fuel beds and is an effective system of cleaning fires. It hasalso great simplicity of both apparatus and operation. These producersare blown with jet blowers of the Schuette & Koerting type. In both, 852 GAS-PRODUCER PRACTICE AT WESTERN ZINC PLANTS hand poking through the top is used to keep the beds open and burn-ing uniforml3^ Fig. 2 shows grouping of these producer units. Threeblocks of twelve units are used on each spelter furnace, and twoblocks of eight units for each M. &. H kiln. At times when the ashdoes not give large cUnkers, the morning work is done by simply mov-ing the permanent bars aside and working the material down into thepits with a bar. The sUding dump boxes are inchned to be smoky whena producer is under pressure and fill the house with gas at the • Damper .m Fig. 2.—Swindell producer in operation at Peru, III., works of IllinoisZinc Co. One battery, or u^^T, consists of four fireplaces feeding into a COMMON FLUE, OR STACK. TwO BATTERIES USED TO ONE SEVEN-HEARTH KILN, ANDTHREE BATTERIES USED TO ONE 830-RETORT SPELTER FURNACE. Hand-poked, Wet Bottoms.—In this class are the well-known Duffproducers. At Depue there are six of the Duffs on the spelter furnacegas equipment and fourteen in the roasting work. An 800-retort furnaceof the Siemens regenerative type requires from three to four producers are of the usual design and are blown with Schuette &Koerting steam jet blowers, see Fig. 3. It has been found beneficialat Depue to increase the size of openings in the grates over that usuallyprescribed by the manufacturer. Especially in working up practice on G. S. BROOKS AND C. C. XITCHIE 853
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
