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Switchable equipment and process for producing white cement clinker and Portland cement clinker

A Portland cement and white cement technology, applied in lighting and heating equipment, improvement of process efficiency, maintenance of heating chamber, etc., can solve the problem that white cement clinker and Portland cement clinker production process cannot be switched and compatible problem, to achieve the effect of high output, realization of heat recovery and utilization, and low energy consumption

Active Publication Date: 2022-05-13
TIANJIN CEMENT IND DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, based on these problems, a solution is provided to solve the problem that the production process of white cement clinker and Portland cement clinker cannot be switched and compatible. Manufacturers can switch between white cement clinker and Portland cement clinker according to market demand. , it is of great practical significance to switch the equipment and process for producing white cement clinker and Portland cement clinker

Method used

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  • Switchable equipment and process for producing white cement clinker and Portland cement clinker
  • Switchable equipment and process for producing white cement clinker and Portland cement clinker
  • Switchable equipment and process for producing white cement clinker and Portland cement clinker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A switchable production of white cement clinker and Portland cement clinker, the switchable production of white cement clinker and Portland cement clinker includes: a preheater 14, the preheater 14 can be based on Requirements for moisture drying of raw materials specifically select the number of preheater stages, the preheating system is connected to the calciner 12, the calciner is connected to the rotary kiln 11, and the rotary kiln is connected to cooling equipment; the cooling equipment includes the unit The barrel bleaching machine 2 and the grate cooler 1 connected in series, the feed port of the single barrel bleaching machine 2 is connected with the rotary kiln door cover 10, the discharge port is connected with the feed port of the grate cooler 1, and the grate cooler The machine cools the clinker to below 100°C;

[0057] When producing white cement clinker, the grate cooler 1 is equipped with a hot air outlet, and the hot air outlet is respectively connected ...

Embodiment 2

[0071] A switchable process for producing white cement clinker, the switchable process for producing white cement clinker adopts equipment that can switch for producing white cement clinker and Portland cement clinker, and the switchable process for producing white cement clinker The material process includes the following steps:

[0072] Step 1: The raw material for producing white cement clinker is fed into the preheater system 14, and the white cement clinker is calcined through the calciner 12 and the rotary kiln 11;

[0073] Step 2: Enter the single-cylinder bleaching machine 2, spray water through the water spray pipe 3, spray water to quench the high-temperature white cement clinker leaving the kiln to 500-650°C, and exhaust the water vapor generated by the water spray through the exhaust pipe 4 to avoid water Steam enters the kiln to reduce the temperature of the flame in the firing zone, which affects the calcination of clinker;

[0074] Step 3: Air at normal tempera...

Embodiment 3

[0076] A switchable process for producing Portland cement clinker, the switchable process for producing Portland cement clinker adopts equipment that can switch for producing white cement clinker and Portland cement clinker, and the switchable The process of producing Portland cement clinker includes the following steps:

[0077] Step 1: before switching from the production of white cement clinker to portland cement clinker, the water spray pipe 3 and the exhaust pipe 4 need to be drawn out or protected from the single cylinder bleaching machine 2;

[0078]Step 2: The raw meal for producing Portland cement clinker is fed into the preheater system 14, and the Portland cement clinker is calcined through the calciner 12 and the rotary kiln 11;

[0079] Step 3: Quickly pass through the single-cylinder bleaching machine 2, keep the high-temperature clinker leaving the kiln at a temperature of 1300-1400°C, enter the grate cooler 1 and cool it to below 100°C, and at the same time pas...

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Abstract

The invention belongs to the field of cement firing process and equipment, and in particular relates to a switchable equipment and process for producing white cement clinker and Portland cement clinker. When producing white cement clinker, low-temperature secondary and tertiary air ducts are used for rotary Secondary and tertiary air are provided for fuel combustion in kilns and calciners. When producing Portland cement clinker, switch to high-temperature secondary and tertiary air pipes to provide high-temperature secondary and tertiary air for fuel combustion in rotary kilns and calciners, or use high-temperature tertiary air The pipeline provides high-temperature tertiary air for fuel combustion in the calciner, the secondary air enters the rotary kiln through the single-cylinder bleaching machine, and the residual air is discharged into the waste gas treatment system through the residual air pipeline. The invention provides a solution to the problem that the production process of white cement clinker and Portland cement clinker cannot be switched and compatible. Manufacturers can use equipment and devices that can switch between white cement clinker and Portland cement clinker according to market demand. Process, flexible choice to produce white cement clinker and Portland cement clinker.

Description

technical field [0001] The invention belongs to the field of cement firing technology and equipment, and in particular relates to equipment and technology capable of switching production of white cement clinker and Portland cement clinker. Background technique [0002] Existing technologies and drawbacks: [0003] After the Portland cement clinker is fired at high temperature, it needs to be cooled rapidly by air cooling to ensure that the clinker has good physical and mechanical properties; white Portland cement is referred to as "white cement". In order to improve the whiteness of the clinker, in addition to controlling In addition to the iron content, the production process requires the high-temperature clinker out of the kiln to be quenched and bleached by water spraying. [0004] Due to the large difference between the special requirements of white cement production process and ordinary Portland cement, the white cement production line is compared with ordinary Portlan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/02C04B7/43C04B7/44C04B7/47C04B7/48F27B7/20F27B7/38F27D15/02F27D13/00F27D17/00F27D7/02F26B23/00
CPCC04B7/02C04B7/43C04B7/4415C04B7/47C04B7/48F27B7/20F27B7/38F27D15/02F27D13/00F27D17/008F27D7/02F26B23/00F27D2013/007Y02P10/25
Inventor 武晓萍彭学平马娇媚李波
Owner TIANJIN CEMENT IND DESIGN & RES INST
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