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THE EFFECT OF THE AMOUNT OF BINDER ON THE PROPERTIES OF BRIQUETTES PREPARED FROM FOUNDRY DUST
Abstract
Briquetting is the pressing of dusty materials into pieces of the same shape and size. Briquetting can be done without a binder or with the addition of a binder to the briquetting mixture. Briquettes can have any shape, but the most common is the shape of a cylinder. The briquettes must be strong enough to eliminate the possibility of damage during transport and must be strong enough even at high temperatures. The briquettes have a regular shape, have the same weight, are more durable and easier to transport. They are ecologically safe and it is possible to use carbon filling in briquettes to activate the process in metallurgical furnaces. Among the most important properties of briquettes are compressive strength and resistance to abrasion when falling. The briquettes were prepared from 4 types of dust from different parts of the foundry process. Dust from blasting castings cast into bentonite molding compounds was used. It is the dust caught in the catch box under the cyclone of the separator (B). The second dust (Bmp) was separated magnetic component of dust B. Dust (GF) captured in the collection reservoirs from the filter devices from the pendulum grinders. Dust (BF) from blasting castings cast in furan mixtures. Dust (G/Bmp) was a mixture of dust G and Bmp in a 2:1 ratio, and dust (G/BF) was a mixture of dusts G + BF in a 2:1 mass ratio. Bentonite and molasses were used as binders. The best properties were obtained from briquettes prepared from dust from grinding castings (G) and from a mixture of dust from grinding castings with dust from blasting castings cast into furan molds (G/BF)
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