Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Intensifier for adjusting congelation of cement prepared from ardealite

A technology of reinforcing agent and phosphogypsum, which is applied in the field of cement adjusting and setting enhancer, can solve the problems of reduced early strength, inability to effectively adjust setting time, and easy blockage of the feeding silo, so as to reduce dosage, facilitate calcination, and increase cement production. Yield effect

Inactive Publication Date: 2007-10-10
UNIV OF JINAN
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the setting time of phosphogypsum used as a cement retarder cannot be effectively adjusted, the early strength is reduced, and the lower silo is easily blocked at the same time, the present invention provides a cement clinker that can reduce the amount of cement clinker. , energy saving, cement setting enhancer prepared from phosphogypsum with simple processing technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: According to the weight ratio batching of phosphogypsum: lime: limestone after crushing = 100: 5: 10, mix evenly, enter the molding machine for compression molding, the pressure is 20Mpa, the size is 115 * 240 * 50mm, then enter the calciner After calcining at 900°C, it is made into a semi-finished coagulation enhancer.

[0016] Then mix the semi-finished product of the setting-adjusting enhancer with triethanolamine according to the ratio of 100:0.2 to obtain the cement setting-adjusting enhancer of the present invention with phosphogypsum as the main component.

[0017] The cement is produced according to the weight ratio of clinker: slag: cement setting modifier = 50:46:4. The clinker is the clinker from Jinan Jiuqu Cement Factory, and the slag is the slag produced by Jinan Iron and Steel Co., Ltd.

[0018] The cement performance that the present invention makes after measuring is as follows:

[0019] The initial setting time is 2 hours and 49 minutes,...

Embodiment 2

[0020] Embodiment 2: According to the weight ratio batching of phosphogypsum: lime: limestone after crushing = 100: 15: 25, mix evenly, enter the molding machine for compression molding, the pressure is 30Mpa, the size is 115 * 240 * 50mm, then enter the calciner After calcining at 1000°C, the semi-finished coagulation-regulating enhancer is made, and then the semi-finished coagulation-regulating enhancer is mixed with triethanolamine at a ratio of 100:0.75 to obtain a cement coagulation-regulating enhancer with phosphogypsum as the main component.

[0021] Cement is produced according to the ratio of clinker: slag: fly ash: limestone: cement setting enhancer = 48:27:15:6:4. The clinker used is clinker from Shandong Cement Plant, and the slag is slag from Jinan Iron and Steel Co., Ltd. , the fly ash is from Jinan Huangtai Power Plant, and the limestone is produced by Jinan Baode Metallurgical Limestone Co., Ltd.

[0022] The cement performance that the present invention makes ...

Embodiment 3

[0024] Embodiment 3: according to phosphogypsum: lime: the weight ratio batching of limestone=100:10:15 after crushing, mix evenly, enter fluidized furnace to make semi-finished product of coagulation-regulating enhancer after calcining at 1000 DEG C, then make the semi-finished product of coagulation-regulating enhancer Mix with triethanolamine according to the ratio of 100:0.5 to obtain a cement setting-adjusting enhancer with phosphogypsum as the main component.

[0025] The cement is produced according to the ratio of clinker: slag: cement setting modifier = 40:56:4. The clinker used is the clinker of Shandong Cement Plant, and the slag is slag from Jinan Iron and Steel Co., Ltd.

[0026] The cement performance that the present invention makes after measuring is as follows:

[0027] The initial setting time is 2 hours and 40 minutes, the final setting is 4 hours and 50 minutes, and the flexural / compressive strength (Mpa) of 3 days, 7 days and 28 days are 4.0 / 25.1, 5.2 / 31.8...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to a method for producing cement thickening control enhancer for cement from phosphogypsum. The method comprises: mixing phosphogypsum with lime and limestone, pressing, calcining at 800-1000 deg.C to obtain a semi-product, and mixing with grinding aid to obtain the product. The method has such advantages as simple process, reasonable formula, and low cost. The cement thickening control enhancer can control the thickening time of cement, increase the strength of cement, increase the doping amounts of mixed materials in cement, decrease the consumption of cement clinker, save energy and resources, and increase profit.

Description

(1) Technical field [0001] The patent of the invention belongs to the field of building materials, and specifically relates to a cement setting-adjusting enhancer prepared from phosphogypsum. (2) Background technology [0002] Phosphogypsum is the waste residue discharged from the manufacture of phosphoric acid by synthetic washing powder factories and phosphate fertilizer factories. For every ton of phosphoric acid produced, 5 tons of phosphogypsum are discharged, and more than 10 million tons of phosphogypsum are discharged every year in my country. On the one hand, the large amount of waste discharge occupies a large amount of land resources, and on the other hand, a small amount of residual phosphorus, fluorine and other harmful impurities pollute the groundwater resources, destroy the living environment of human beings, and cause serious environmental pollution. [0003] Using phosphogypsum instead of natural dihydrate gypsum to produce building materials not only saves...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/16C04B22/14C04B22/06C04B22/10C04B24/12C04B103/44C04B103/52
Inventor 付兴华陶文宏吴波郑少华
Owner UNIV OF JINAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com