A kind of slag, steel slag fine powder production process

Abstract

The invention discloses an ore slag and steel slag micro powder production technology. The ore slag and steel slag micro powder production process is divided into the micro powder preparing process and the coal powder preparing process, and the same grinding machine is adopted in the micro powder preparing process and the coal powder preparing process for time sharing alternated proceeding. In themicro powder preparing process, high-temperature hot smoke provided by a hot blast heater with coal powder as fuel dries the ore slag and steel slag micro powder. In the coal powder preparing process, crude coal is pulverized in the grinding machine and ground into coal powder, high-temperature hot smoke provided by the hot blast heater with coal powder as fuel dries the coal powder, and the dried coal powder is collected in a coal powder finished product warehouse to be used by the hot blast heater. By adoption of the ore slag and steel slag micro powder production technology, an existing ore slag and steel slag micro powder production line is matched with the hot blast heater with coal powder as fuel, coal powder production equipment used by the hot blast heater can be shared with ore slag and steel slag micro powder production equipment, additional increasing of system equipment occupied space is avoided, the investment expense is reduced, and the construction period is shortened.

Description

technical field [0001] The invention relates to a production process of slag and steel slag micropowder. Background technique [0002] Slag and steel slag fine powder is a kind of ultrafine powder obtained by grinding blast furnace water slag and steel slag. The chemical composition of slag powder is mainly silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, ferric oxide, titanium dioxide, manganese dioxide, etc.; it contains more than 95% of vitreous body and dicalcium silicate, calcite feldspar, silicon Limestone and other minerals are similar to cement; steel slag powder is mainly composed of calcium, iron, silicon, magnesium, aluminum, manganese, phosphorus and other oxides, and steel slag powder contains tricalcium silicate and dicalcium silicate similar to cement And active minerals such as ferric aluminate, with hydrogel coagulation. Slag and steel slag micropowder have ultra-high activity and are used as high-quality admixtures for cement and concrete,...

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Problems solved by technology

[0006] If the existing slag and steel slag powder production line is equipped with coal powder as fuel hot blast stove, it is necessary to install a whole set of coal powder manufacturing equipment, which will increase the number of system equipment, occupy a large space, high investment cost and long construction period

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