Influence of pretreatment process of ball press binder

In the molding of the ball press, due to the addition of binders such as tar and asphalt, the coal will soften and deform when it is carbonized at a high temperature, so that the carbonization cannot proceed smoothly. In particular, the fixed-bed carbonization furnace process will cause the carbonization material to be difficult to go down or even to be set, and the coal briquetting needs to be pretreated to make the briquette have a certain strength. The effect of the treatment temperature of briquette on the briquette strength. In the test, syrup was used as a binder, and the semi-coke which was co-carbonized at 600 ° C with low-rank coal and olive core was blended with 14% syrup at a pressure of 125 MPa, and then the briquette was treated. The briquette was treated at 200 ° C for 2 h and 4 h respectively, and the heating rate was 2 ° C / min. The effect of the treatment time on the briquette was studied. The results show that the briquette obtained after treatment at 200 ° C for 2 h has the best mechanical strength and water resistance. Under this condition, the briquette forms a large number of carboxyl structures, which is favorable for the formation of hydrogen bonds and makes the briquette more stable. When the treatment temperature is 220 ° C, the optimum treatment time of the briquette is 90 min. Once the optimum treatment time has been determined, the effect of treatment temperature on the quality of the briquette can be studied. The results show that the strength of the briquette rises linearly with the increase of the treatment temperature, and the best quality briquette is obtained at 285 °C. Coal tar after distillation at 150 ° C was used as a binder. Investigate the compressive strength of air-treated briquette and nitrogen-treated coalized coke. The results show that the strength of the briquette after air treatment is 7 MPa higher than that of the nitrogen treatment. Tips: Buying coal briquetting equipment must choose professional manufacturers. DAYANG BRIQUETTE MACHINERY is a professional manufacturer of briquetting machines and other briquette equipment. At present, the main products are close to the world advanced level. The products are sold at home and abroad and exported to Africa, Southeast Asia and Western Europe. South American countries.

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