Transactions . ase the revolution of the table isstopped in any way. The press, with ordinary care as to lubrication andadjustment, gives no trouble. The press is operated at a speed to deliver 20 briquettes per minute, or1,200 per hour. Briquettes weigh from to 12 lb. apiece, so productionis at the rate of about 6 tons per hour. The briquettes are dischargedautomatically from the press table on to a belt conveyor by a storage space was not provided in the briquette shed for allbriquettes made running both day and night turns, so the day-turnbriquettes are run on the con
Transactions . ase the revolution of the table isstopped in any way. The press, with ordinary care as to lubrication andadjustment, gives no trouble. The press is operated at a speed to deliver 20 briquettes per minute, or1,200 per hour. Briquettes weigh from to 12 lb. apiece, so productionis at the rate of about 6 tons per hour. The briquettes are dischargedautomatically from the press table on to a belt conveyor by a storage space was not provided in the briquette shed for allbriquettes made running both day and night turns, so the day-turnbriquettes are run on the conveyor directly to flat-bottom gondolacars, where they are taken off by hand and stacked. On the night turn,briquettes are taken off the conveyor by hand and stacked in the shed,where they are allowed to stand about 24 hr., then thrown by hand orloaded by the conveyor again into hopper-bottom cars. Both of thesearrangements are very crude and expensive, but of the two, the method of THE BRIQUETTING OF FLUE <to < ag 5w w THE BRIQUETTING OF FLUE DUST. 341 stacking the briquettes on the ground proves the more satisfactory, as thebriquettes have proper time and ventilation to harden as they should,which is not the case in the cars, where the briquettes are packed tootightly and get very little ventilation. It was found that very hot dust—that is, dust directly from the catch-ers—did not make good briquettes; the explanation being that the moisturein the briquettes was driven off before time was given for any cementingreaction to take place. As brought out in previous discussions on the sub-ject, moisture is a necessary factor in the cementing action. The dustshould certainly be cool enough not to burn the hand when handledbefore going into the press. In cases where the briquettes were too hot,and dried too fast, some improvement could be made by sprinkling thebriquettes with water. This helped to harden the briquettes to the depthto which the moisture penetrated, bu
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
