SU624944A1 - Method of control of agglomeration process - Google Patents

Description

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The invention relates to metallurgical industry, in particular, to sintering production on conveyor machines, and can be used in industrial building materials TE for the production of agloporite.

The method of regupping of the sintering process is known, in particular, a method based on controlling the speed of sintering machines by the temperature of the exhaust gases in vacuum chambers and the common collector, or by the gas permeability of the mixture of charge gas.

As a rule, systems implementing this method are unstable,

they are prone to oscillatory mode, are unreliable due to the large number of control devices with multiple crossover links, which leads to a deterioration in the quality of regulation.

The closest to the proposed by the technical essence and the achieved effect is the way of conducting the sintering process, pre

which calculates the required amount of agglomerate to obtain a specified amount of sinter, removed from the agglomeration machine. The required amount of agglomerate is measured by weighers in the total sintering unit smelter, and the resulting amount of sinter is measured by weighing the cars with the finished hot sinter before sending it to the blast furnace.

In this method, the regulation of the agglomeration process is carried out according to a generalized criterion-maximizing the performance of the sintering machine when restrictions are placed on the qualitative composition of the agglomerate. In this case, the total control of the sintering section is reduced to stabilizing the control parameters, for example, the speed of the sintering at a certain level with the issuance of correction pulses to the regulator settings, for example, the speed of the sintering machine, the weight ratios of the components of the sintering mixture. However, information on the adjustment of the charge calculation enters the charge compartment with a large transport delay equal to the time of the entire technological cycle of the sintering process (6O-70 sec.). Naturally, such information cannot serve for the qualitative regulation of the sintering process. The purpose of the invention is to improve the quality of control of the agglomeration process. This is achieved by determining the change in weight of the charge on the carriage during sintering and changing the speed of the sintering tape so that this change is equally definable, and increase the speed if the weight change is less given and reduce it otherwise. As is well known, during the sintering process in the Bijropaer mixture, the fuel (coking), sulfur and other elements that do not contain iron, moisture evaporates, decomposes known to k. The weight of the finished agglomerate is less than the weight of the mixture prepared for sintering. This difference characterizes the process of sintering. So, if the sintering process is fully completed, i.e. the fuel is completely burned out, the moisture has evaporated, decomposition is known, then this difference in weight is maximum. If the sintering process is not completed, then the components of the charge are present in the aglospace (for example, coking, limestone), which go back, and the weight difference is reduced. The proposed method differs from the known one in that the change in the weight of the charge is determined on the trolley during the sintering process and the rate of agglomeration is changed depending on the 6 4 weight from the target, which leads to an improvement in the quality of control of the agomeratization process. The weight difference is uniquely dependent on the end of the sintering process and therefore, determining the change in the weight of the charge on the trolley and, accordingly, changing the sintering belt speed, it is possible to stabilize the end of the sintering process, while the formation of the sintering process on the change in the weight of the charge will proceed continuously, directly from sintering tape, which leads to an improvement in the quality of regulation of the sintering process. about reggae and method of regulating by means of changing the speed of the polymer taking into account the weight of the charge, about one of them, and, with the purpose of improving the quality of regulation, they determine the weight of the charge on the trolley during sintering, they change the speed of the sintering tape so that this change is equal to the specified one, and increase the speed if the change in weight is less than the specified one and reduce it otherwise. Sources of information, taken into account when & vv: 1. Automatic xsrol and regulation in the ferrous metal industry. M., Metallurgists, 1967, p. 608. 2. Avtomatizatsiya aglodomennogo production of the Ukrainian SSR, UkrNIZhTI, Kiev, 1969, p. 34-38.