A filling material and method of using the same

A filling material and modification technology, applied in the field of filling materials, can solve the problems of increased bleeding, low compressive strength, easy segregation of the slurry, etc., and achieve the effect of reducing the use and processing costs and solving the problem of material selection.

Active Publication Date: 2022-03-29
河北充填采矿技术有限公司 +1
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low cohesion of filling paste, easy segregation of slurry, increased bleeding and low compressive strength when the existing goaf filling material uses aeolian sand as raw material, the invention provides a filling material and how to use it

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A filling material and method of using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A filling material, including the following components in mass percentage:

[0032] 8% cement, 30% fly ash, 25% coal gangue, 35% aeolian sand, 2% plant fiber;

[0033] Described cement comprises the component of following mass percentage:

[0034] Modified mineral powder 55%, composite gypsum 25%, Portland cement clinker 12%, composite admixture 8%.

[0035] Wherein, fly ash comprises the component of following mass content: 45% SiO 2 , 20% Al 2 o 3 , 6% FeO, 5% Fe 2 o 3 , 2% CaO and 1% TiO 2 ; The sieve residue of fly ash passing through the 45μm square hole sieve is 20%, the loss on ignition is 7%, the water requirement ratio is 98%, SO 3 The mass content is 1.5%.

[0036]The particle size of coal gangue is ≤25mm, and the coal gangue with particle size ≤5mm accounts for 55% of the total coal gangue mass; In the sub-workshop, the vibrating screen is used for preliminary screening, and the coal gangue with a particle size of ≤25mm is transported to the coal gan...

Embodiment 2

[0046] A filling material, including the following components in mass percentage:

[0047] 9% cement, 28% fly ash, 28% coal gangue, 34% aeolian sand, 1% plant fiber;

[0048] Described cement comprises the component of following mass percentage:

[0049] Modified mineral powder 58%, composite gypsum 22%, Portland cement clinker 11%, composite admixture 9%.

[0050] Wherein, fly ash comprises the component of following mass content: 50% SiO 2 , 25% Al 2 o 3 , 8% FeO, 6% Fe 2 o 3 , 3% CaO and 2% TiO 2 ; The sieve residue of fly ash passing through the 45μm square hole sieve is 15%, the loss on ignition is 5%, the water requirement ratio is 101%, SO 3 The mass content is 2%.

[0051] The particle size of coal gangue is less than or equal to 25mm, and the coal gangue with a particle size of less than or equal to 5mm accounts for 60% of the total coal gangue mass; the crushing process of coal gangue is firstly screened and then crushed, and the hand-selected raw coal gangue...

Embodiment 3

[0061] A filling material, including the following components in mass percentage:

[0062] 10% cement, 25% fly ash, 30% coal gangue, 30% aeolian sand, 5% plant fiber;

[0063] Described cement comprises the component of following mass percentage:

[0064] Modified mineral powder 60%, composite gypsum 20%, Portland cement clinker 10%, composite admixture 10%.

[0065] Wherein, fly ash comprises the component of following mass content: 55% SiO 2 , 30% Al 2 o 3 , 10% FeO, 8% Fe 2 o 3 , 5% CaO and 2% TiO 2 ; The sieve residue of fly ash passing through the 45μm square hole sieve is 12%, the loss on ignition is 8%, the water requirement ratio is 103%, and the SO 3 The mass content is 3%.

[0066] The particle size of coal gangue is ≤25mm, and the coal gangue with a particle size of ≤5mm accounts for 65% of the total coal gangue quality; In the sub-workshop, the vibrating screen is used for preliminary screening, and the coal gangue with a particle size of ≤25mm is transpor...

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of mining and filling, and specifically discloses a filling material and a method for using the filling material. The filling material is 8-10% of cement, 25-30% of fly ash, 25-30% of coal gangue, and 30% of aeolian sand. ‑35%, plant fiber 1‑5%; the cement includes the following components in mass percentage: modified mineral powder 55‑60%, composite gypsum 20‑25%, Portland cement clinker 10‑12%, Composite admixture 8‑10%. The paste formed during the use of the filling material of the present invention has good cohesion and stability, low bleeding rate, high shear and compressive strength, low raw material cost, and solves the difficulty in obtaining raw materials for filling materials in aeolian sand areas. question.

Description

technical field [0001] The invention relates to the technical field of mining mining and filling, in particular to a filling material and a using method thereof. Background technique [0002] The goaf in mining mining is usually artificially filled with filling materials to control the fracture of the overlying strata. This method can not only increase the recovery rate, reduce the dilution rate, but also control the surface subsidence. The filling materials can be fly ash and coal gangue. , tailings, slag and other solid waste, while meeting the filling needs, it also realizes green mining. [0003] In the goaf filling technology, the commonly used filling material is to process coal gangue, fly ash, industrial slag, municipal solid waste and water on the ground to make a paste slurry, and use a filling pump or gravity pressure to pass through the pipeline. Transport the filling material to the underground to form an overlying rock support system dominated by paste filling...

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 Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/142C04B2201/50C04B2111/00724C04B2111/00146C04B18/141C04B18/08C04B7/02C04B18/12C04B14/068C04B18/24C04B22/00C04B22/06C04B22/143C04B24/22C04B24/04C04B22/14C04B20/0076C04B2103/0068C04B2103/302C04B2103/52
Inventor 孙春东王学伟秦大健卢志敏郝永超王英杨洪增董小娟
Owner 河北充填采矿技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap