SU1421717A1 - Method of producing cement raw slurry - Google Patents

Abstract

The invention relates to the industry of building materials, mainly to the technology for the preparation of cement raw PSA for the production of cement clinker. The aim of the invention is to prevent foaming. Raw materials are fed to the wet grinding mill using a plate feeder. Technical lignosulfonates and water are fed into the mill using volumetric dosing units, which, when fed, provide the specified ratio between technical lignosulfonates and water 0.2-0.33. In addition, with the help of a continuously operating rotational viscometer in the sludge flow, its spreadability is determined and, with deviations from the specified values of 50-60 mm, the supply of technical lignosulfonates and water is automatically controlled in a given ratio. tab. (L

Description

 to

si

The invention relates to the building materials industry and can be used to intensify the process of preparing sludge and prevent its foaming,

The aim of the invention is to prevent foaming.

The essence of the invention is as follows: Surface tension At the gas-liquid interface, the concentration of the aphid tends to decrease with increasing spreading capacity of the system to 90 mm, and the decrease in the latter leads to an increase in air absorption capacity. When the water content decreases to a quantity that ensures the flowability of the sludge 50-60 mm, the surface tension increases and, consequently, the foaming capacity decreases. The laboratory setup, which is a model production process and consists of a blower, is designed to uniformly bubbling air in the slurry layer.

The same portions of sludge with different concentrations of tle are poured into the measuring vessel and the humidity of the sludge corresponding to a spreadability of 50-60 mm is selected using a rotational viscometer. Then the slurry is subjected to bubbling.

The research results are summarized in the table.

Based on the results obtained, it can be made that the use of the proposed method will prevent the formation of sludge pricing.

The procedure is as follows.

The raw mill components are fed to the wet mill by means of plate feeders and the water is fed to the mill with the help of volumetric metering units, which, when fed, provide the desired ratio between the tank and water 0.2-0.33. In addition, with the help of an uninterrupted rotational viscometer in the sludge flow, its spreadability is determined, and with deviations from the set values of 50-60 mm, the flow of aphids and water is automatically controlled within the specified limits.

Claims (1)

Invention Formula A method for the preparation of cement raw sludge for the production of cement clinker, including dosing of raw materials and water, joint grinding, introduction of technical lignosulfonates and subsequent mixing, so as to prevent foaming in the sludge, technical ligno-sulphonates Sulfonates are introduced in the amount of 0.2-0.33 of the moisture content in the sludge at its spreadability of 50-60 mm. Known method RRT treated with pH - 4.45 0.15 pH - 4.45 0.25 pH -ft, 69 0.15 pH - 4.69 0.25 L1) borrow table continuation table H 4.3 H - 4.3 0.15 0.25 H 4.3 0.33 60 70 ABOUT 80 90 100 50 60 70 80 90 100 50 60 70 80 90 iOO 50 60 70 80 90 6 ten 2 6 12 29 FOR 57 2 .6 12 0.20 0.25 50 60 70 80 90 100 50 4 7 8 tle 0.33 tle 0.38