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Process flow and equipment for producing cement clinker by high-temperature molten-state slag

A high-temperature melting and cement clinker technology, applied in clinker production, cement production, etc., can solve problems such as heat pollution, waste of water resources, and inability to use cement clinker, so as to save mine resources, reduce energy consumption, and protect the environment. obvious effect

Inactive Publication Date: 2011-01-12
杨振立 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantage is that a large amount of water resources are wasted, causing secondary pollution and thermal pollution. The physical sensible heat of liquid slag at 1550°C cannot be recycled, resulting in a large waste of waste heat resources; due to the chemical composition of the slag after water quenching The chemical composition of cement clinker is basically the same, and it belongs to silicate, but only the content of mineral components is different, and it cannot be used directly as cement clinker.

Method used

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  • Process flow and equipment for producing cement clinker by high-temperature molten-state slag
  • Process flow and equipment for producing cement clinker by high-temperature molten-state slag
  • Process flow and equipment for producing cement clinker by high-temperature molten-state slag

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The technological process of producing cement clinker from high-temperature molten slag is to install a liquid slag heat preservation slag storage tank at the slag outlet of the smelting furnace, store the liquid slag in the liquid slag heat preservation slag storage tank, transport it to the reaction tank by a trolley and prepare it Iron powder, carbide slag and clay or fly ash are mixed, and after the temperature is adjusted by the system, they are pre-combined with iron powder, carbide slag and clay or fly ash; the obtained material is liquid clinker, and the online detection value conforms to the product quality After controlling the standard, the qualified liquid clinker is sent to the rotary kiln for compounding, cooling, and solidification to 1350°C, and is quenched by the cooler to become solid clinker. After the temperature of the solid clinker is reduced to 650°C, it is slowly cooled to ambient temperature At 65°C, the solid clinker is transported to the clinke...

Embodiment 2

[0027]The process flow for producing cement clinker from high-temperature molten slag, the reaction temperature of the liquid slag and iron powder, carbide slag and clay or fly ash is controlled between 1500°C-1200°C; the iron The preheating temperature of powder, carbide slag and clay or fly ash is adjusted in the range of 600-1100 ° C; the solidification cooling granulation temperature of the solidified clinker is controlled in the interval of 1350-1280 ° C; the solidification The final cooling temperature of the clinker is ambient temperature plus 25° C.; the cooling medium for the solidified clinker is two fluids of air and steam, and the steam is superheated steam or saturated steam or unsaturated steam.

Embodiment 3

[0029] The above-mentioned special equipment for producing cement clinker from high-temperature molten slag comprises: a smelting furnace 1, the smelting furnace 1 is connected to a conveying tower 4 equipped with a liquid slag heat preservation slag storage tank 3, and the conveying tower 4 is connected to A reaction tank 5, the reaction tank 5 is connected to the rotary kiln 6, the rotary kiln 6 is connected to the cooler 7, the cooler 7 is connected to the conveyor 8, the air outlet of the rotary kiln and the outlet of the cooler The tuyere is connected to the waste heat power station 9 at the same time, the conveyor 8 is connected to the clinker storage 10 , and the smelting furnace has a slag outlet 2 .

[0030] The special equipment for producing cement clinker from high-temperature molten slag, the liquid reactant after the pre-combination reaction in the reaction tank is completed in the rotary kiln, cooled, solidified and granulated; and can control Special equipment ...

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Abstract

The invention relates to process flow and equipment for producing cement clinker by high-temperature molten-state slag. The steel yield of China ranks first in the world. The process flow for producing cement clinker by high-temperature molten-state slag comprises the following steps of: installing a thermal insulation liquid-state slag storage tank at the slag hole of a smelting furnace; storing liquid-state slag in the thermal insulation liquid-state slag storage tank; conveying the liquid-state slag to a reaction tank so as to mix the liquid-state slag with prepared iron powder, carbide slag and clay or pulverized fuel ash; carrying out the prep-combination reaction on the liquid-state slag with the irony powder, the carbide slag and the clay or the pulverized fuel ash after the temperature is regulated by a system, wherein the obtained material is liquid-state clinker; after the online detection value meets the production quality control standard, feeding the qualified liquid-state clinker into a rotary kiln to be compounded, cooled and solidified to 1350 DEG C; quenching by a cooler to make the liquid-state clinker become solid-state clinker to ensure that the solid-state clinker is slowly cooled to the environmental temperature after reduced to 650 DEG C and then heated to 65 DEG C; and conveying the solid-state clinker to a clinker bin by using a conveyer. The invention is used for black metallurgy industry and building material industry.

Description

Technical field: [0001] The invention relates to a process flow equipment for directly producing cement clinker from high-temperature molten liquid slag, in particular to a process flow, method and equipment for producing cement clinker from high-temperature molten slag. Background technique: [0002] my country's steel output ranks first in the world. In 2008, the annual output of steel was 460 million tons. In the iron and steel smelting production process, 300 million tons of iron slag and steel slag waste are discharged every year. In recent years, the domestic building materials industry has adopted the water quenching process to quench the liquid slag into granular slag, which is used as building material raw materials and road construction raw materials. Its main disadvantage is that a large amount of water resources are wasted, causing secondary pollution and thermal pollution. The physical sensible heat of liquid slag at 1550°C cannot be recycled, resulting in a l...

Claims

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Application Information

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IPC IPC(8): C04B7/38C04B7/14
CPCY02P40/10Y02P40/121
Inventor 杨振立刘连城
Owner 杨振立
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