Briquette Machines

Briquette Machines (Simiiar to Peiietizing and Baiiing Machines)... 

The hot reduced fines are pneumatically transported to an atmospheric pressure hoi ding dmm from which they are fed to the briquetting machines. The hot briquettes are separated, cooled on a circular grate, and deUvered to an outdoor storage pile. 

If a material is subjected to very high compaction forces, it may be formed into sheets, briquettes or tablets. In the tableting machines used for producing pills of pharmaceuticals, the powder is compressed into dies, either with or without the addition of a binder. 

Also, briquetting machine machine that produces BRIQUETTES. 

If rows of identical pockets are machined into the working surface and the rollers are timed such that the pocket halves exactly match, so-called briquettes are formed (Figure 224). Roller presses do not produce compacts with the same fine detail and uniformity as those made by tabletting machines or other die presses. The flashing or web, caused by the land areas around each briquette pocket, which is usually found on the edges of all briquettes from roller presses can not be removed completely and reliably and, therefore, may also be objectionable. 

Due to leakage at the sides of the rollers (see Section 4.2.2.4.7, Sealing the roll nip ) and, in the case of roll-type briquetting machines, the flashing or webs around the briquettes, the actual throughput of and the feed to roller presses are somewhat higher (approximately 5-15% see Section 4.2.2.4.7). 

Briquetter [n.] Also briquetting machine equipment that produces briquettes. 

Tab. 8.10 summarizes some technical information for high pressure ram extrusion presses. Tab. 8.10a presents machine details and Tab. 8.10b indicates the approximate briquette output per channel of the shapes shown at the top. In Tab. 8.10b impact area means the face area of the ram that is contacting (impacting) the material to be briquetted it is approximately equivalent to the face area of the briquettes as represented by the shapes specified in the first three lines of Tab. 8.10b. As mentioned before, at typical ram speeds the contact time is so short for each cycle (0.04 s was mentioned, see above) that compacting is often referred to as being carried out by a blow.

Tab. 8.10 Technical information on some typical high pressure extrusion presses, (a) machine data, (b) briquette output (according to ZEMAC, Zeitz, Germany).

The rollers themselves or pockets and indentations that are machined into the working surfaces of the rolls form compacts or briquettes. Between smooth, fluted, corrugated, or waffled rollers, material is compacted into dense sheets (Fig. 8.118, see also Chapter 6, Fig. 6.5, lower left). Normally, these sheets are crushed and screened to yield a granular product. This process is called compaction/granulation. If the two rollers carry rows of identical pockets or moulds and the rolls are timed such that the pockets, representing roughly one half of the final product shape, match exactly (Fig. 8.119), so called briquettes are produced (see also Chapter 6, Fig. 6.5, lower right). 

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