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A kind of sulphoaluminate cement using petroleum coke desulfurization slag as raw material and preparation method thereof

A technology of sulphoaluminate cement and desulfurization slag, which is applied in cement production and other directions, can solve the problems of low utilization rate of petroleum coke desulfurization slag and large environmental impact, and achieve good environmental and economic benefits, environmental friendliness, and high-efficiency utilization Effect

Inactive Publication Date: 2016-04-06
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, aiming at the current problems of low utilization rate of petroleum coke desulfurization slag and great impact on the environment, combined with the problem of raw material sources in the production process of sulphoaluminate cement, it is designed to provide a petroleum coke Sulphoaluminate cement with desulfurization slag as raw material and preparation method thereof, comprehensively and efficiently utilizing petroleum coke desulfurization slag as raw material to prepare sulphoaluminate cement

Method used

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  • A kind of sulphoaluminate cement using petroleum coke desulfurization slag as raw material and preparation method thereof
  • A kind of sulphoaluminate cement using petroleum coke desulfurization slag as raw material and preparation method thereof
  • A kind of sulphoaluminate cement using petroleum coke desulfurization slag as raw material and preparation method thereof

Examples

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Embodiment 1

[0019] In this embodiment, petroleum coke desulfurization slag, bauxite, limestone, and clay are used as raw materials, and the mineral composition of cement clinker is designed to be calcium sulfoaluminate C 4 A 3 S60%, dicalcium silicate C 2 S30%, Calcium Aluminum Ferrite C 4 AF10%, the specific raw material ratio (weight percentage) is: petroleum coke desulfurization slag 22.3%, bauxite 29.7%, limestone 38.5%, clay 12.2%; first mix the raw materials and place them in a ball mill for ball milling, and then place them in The clinker is obtained by calcining in the kiln, the calcining temperature is 1320°C, and the calcining time is 30 minutes, and then the calcined clinker is ball milled again, and after the fineness reaches below 200 mesh, 5% gypsum is added to the clinker, using the existing technology Sulphoaluminate cement was made after mixing and ball milling; the initial setting time of the obtained cement was 35 minutes, the final setting time was 45 minutes, the co...

Embodiment 2

[0021] In this embodiment, petroleum coke desulfurization slag, bauxite, limestone, and clay are used as raw materials, and the mineral composition of cement clinker is designed to be: calcium sulfoaluminate C 4 A 3 S65%, dicalcium silicate C 2 S27%, Calcium Aluminum Ferrite C 4 AF8%, the specific ratio of raw materials (percentage by weight) is: 28.6% of petroleum coke desulfurization residue, 31.4% of bauxite, 33.7% of limestone, and 6.3% of clay; The clinker is calcined in the kiln, the calcination temperature is 1280°C, and the calcination time is 30 minutes; then the calcined clinker is ball milled again, and the fineness reaches below 200 mesh, and then 5% gypsum is added to the clinker, using the existing technology Sulphoaluminate cement was made after mixing and ball milling; the initial setting time of the obtained cement was 23 minutes, the final setting time was 30 minutes, the compressive strength of 3 days was 55.4MPa, and the compressive strength of 28 days wa...

Embodiment 3

[0023] In this embodiment, petroleum coke desulfurization slag, bauxite, limestone, and clay are used as raw materials, and the mineral composition of cement clinker is designed to be: calcium sulfoaluminate C 4 A 3 S65%, dicalcium silicate C 2 S27%, Calcium Aluminum Ferrite C 4 AF8%, the specific ratio of raw materials (percentage by weight) is: 28.6% of petroleum coke desulfurization residue, 31.4% of bauxite, 33.7% of limestone, and 6.3% of clay; The clinker is obtained by calcining in the kiln, the calcining temperature is 1280°C, and the calcining time is 30 minutes; then the calcined clinker is ball-milled again, and the fineness reaches below 200 mesh, and then 10% gypsum is added to the clinker, and the existing technology is used for mixing Sulphoaluminate cement was produced after ball milling; the initial setting time of the obtained cement was 28 minutes, the final setting time was 35 minutes, the 3-day compressive strength was 54.7MPa, and the 28-day compressive...

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Abstract

The invention belongs to the technical field of constructional engineering material and the preparation thereof, and relates to sulfate aluminum cement taking petroleum coke desulfurization residues as raw materials and a preparation method of the sulfate aluminum cement taking the petroleum coke desulfurization residues as the raw materials. The preparation method of the sulfate aluminum cement comprises the following steps: firstly, determining the proportion of the petroleum coke desulfurization residues, bauxite, limestone and clay according to minerals of the sulfate aluminum cement clinker, mixing and putting the raw materials into a ball mil for performing ball-milling to obtain a mixture, roasting the mixture in a kiln furnace after the ball-milling is ended to obtain roasted clinker; and finally, performing ball-milling on the roasted clinker again and adding gypsum, preparing the sulfate aluminum cement after mixing and ball-milling, wherein the raw materials are as follows in percentage by weight: 20%-40% of petroleum coke desulfurization residues, 20%-40% of bauxite, 30%-60% of limestone and 5%-15% of clay. Various components in the petroleum coke desulfurization residues are sufficiently and efficiently utilized to overcome the problem that a great deal of natural gypsum and limestone is consumed during the production of the sulfate aluminum cement. The sulfate aluminum cement is environmental friendly, and has relatively good environmental benefits and economic benefits.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering materials and their preparation, and relates to a sulfoaluminate cement using petroleum coke desulfurization slag as a raw material and a preparation method thereof, in particular to a method for preparing sulfoaluminum with petroleum coke desulfurization slag as a main raw material salt cement method. Background technique: [0002] Sulphoaluminate cement is an inorganic non-metallic material with excellent performance and high added value. It has the characteristics of fast setting, high strength, micro-expansion, low shrinkage and good resistance to seawater corrosion. The concrete impermeability and Good crack resistance, long-term stable strength and good durability. The antifreeze performance of sulphoaluminate cement is more than 5 times that of ordinary Portland cement, and the anti-permeability performance is more than 2 times that of ordinary Portland cement. Therefore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/32C04B7/24
CPCY02P40/10
Inventor 耿永娟李秋义李绍纯金祖权
Owner QINGDAO TECHNOLOGICAL UNIVERSITY