CN114057415A - Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material - Google Patents

Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material Download PDF

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CN114057415A
CN114057415A CN202111512396.4A CN202111512396A CN114057415A CN 114057415 A CN114057415 A CN 114057415A CN 202111512396 A CN202111512396 A CN 202111512396A CN 114057415 A CN114057415 A CN 114057415A
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slag
powder
solid waste
full
tailing
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Inventor
刘文欢
李辉
赵忠忠
杜任豪
万永峰
蒋逸雯
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Inorganic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a multi-solid waste gel material, a multi-solid waste filling material based on the gel material, and a preparation method and application of the multi-solid waste filling material, and belongs to the technical field of mine filling and resource circulation. Mixing and synergistically exciting the lead smelting water quenching slag micro powder, the cement clinker micro powder, the slag ash, the ammonia evaporation waste slag, the full-grade tailing and the water according to a proportion, and preparing the ecological filling materials with different slurry concentrations, different strengths and different slump degrees. The production process comprises the steps of micro powder grinding preparation, powder stirring homogenization, tailing thickening and multi-solid waste ecological filling material preparation, realizes continuous and large-scale operation, improves the production efficiency, utilizes various industrial solid wastes to prepare the ecological filling material, replaces the filling material prepared by the traditional cement, relieves the pressure of resources, environment and carbon dioxide gas emission to a certain extent, and the prepared multi-solid waste ecological filling material has the same performance as the filling material prepared by all cement and can be widely used.

Description

Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material
Technical Field
The invention relates to the technical field of mine filling and resource circulation, in particular to a multi-solid waste gel material, a multi-solid waste filling material based on the gel material, and a preparation method and application of the multi-solid waste filling material.
Background
Mining and production are the basis of mineral resource development and utilization, but various mineral resources also bring about a lot of problems when mining and producing, according to statistics, about 7100t industrial waste residue can be produced when producing ten thousand tons of lead, meanwhile, lead ore dressing can produce a large amount of tailing sand, and a huge number of goafs appear. The safety and environmental problems caused by ore mining, ore dressing and smelting are more prominent, and great negative effects are brought to the natural ecological environment and the social and economic life. In order to achieve the aims of zero emission and zero pollution of ore mining, mineral separation and smelting industries and safely, fully and effectively recycling mineral resources, the ecological filling of the mine goaf becomes more important, and the method is an effective means for protecting the ecological environment of a mining area and improving the utilization rate of the mineral resources.
At present, mine goaf filling mainly takes cement as a cementing material, and various fine aggregates are cemented by the cement to form mine filling materials with different performances. However, there are several key common problems with using cement for mine filling: firstly, the cement cost is high, so that the filling cost is high; secondly, the cement manufacturing process is a process with high pollution, high energy consumption and high-temperature chamber gas emission, and large-scale mine goaf filling is carried out by adopting cement, so that the damage to energy and environment caused by cement production can be further aggravated; thirdly, various tailings and waste residues with huge quantities are generated in the ore mining, mineral separation and smelting processes, if a large amount of tailings and waste residues are piled up, precious land is occupied, and the environment and underground water are seriously polluted. Therefore, how to comprehensively consider how to utilize industrial solid wastes such as tailings sand and smelting waste slag generated in the processes of ore mining, mineral separation and smelting in a large-scale resource manner in the process of mine filling, so that the environmental burden reduction and enterprise synergy are realized, and the problems which need to be solved urgently are solved.
Disclosure of Invention
The invention aims to provide a multi-solid waste gel material, a multi-solid waste filling material based on the gel material, and a preparation method and application of the multi-solid waste filling material, so as to solve the problems in the prior art, realize the coupling utilization of industrial waste residues in mines, metallurgy and salt lakes, and overcome the common problems of high cost, high energy consumption and low resource utilization rate of solid wastes caused by adopting cement as a filling gel material in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
one of the technical schemes of the invention is to provide a multi-solid waste cementing material, which comprises the following components in percentage by mass:
36.51-45.16% of lead smelting water quenching slag micro powder, 19.35-21.75% of cement clinker micro powder, 10.43-12.90% of slag powder, 15.64-19.35% of lime slag, 0-13.04% of ammonia evaporation waste slag and 2.60-3.22% of bischofite;
the lime slaking is lime milk obtained by mixing lime and water and digesting the mixture by a lime slaking machine.
The fineness of the lead smelting water-quenched slag micro powder is more than or equal to 400m2Per kg; the fineness of the cement clinker micro powder is more than or equal to 330m2/kg。
The second technical scheme of the invention is to provide a multi-solid waste filling material, which comprises the multi-solid waste cementing material and full-grade tailings; the full-grade tailing is full-grade tailing of lead ore.
Further, the rubber-sand ratio of the multi-solid waste filling material is 1: 2-1: 12.
The third technical scheme of the invention is to provide a preparation method of the multi-solid waste filling material, which comprises the following steps: and mixing the lead smelting water quenching slag micro powder, cement clinker micro powder, slag melting, ammonia evaporation waste slag, bischofite, full-grade tailing and water to ensure that the concentration of slurry is 70-74 percent, thus obtaining the multi-solid waste filling material.
Further, after the full-grade tailing is made into full-grade tailing slurry by water, the full-grade tailing is thickened by a flocculating agent, and then the full-grade tailing is mixed with the lead smelting water quenching slag micro powder, the cement clinker micro powder, the slag powder, the ammonia evaporation waste slag and the bischofite.
Further, the addition amount of the flocculating agent is 20-30 g/t by taking the dry basis of the full-graded tailings as a calculation reference, and the flocculating agent is NT-208B (France Edison).
The fourth technical scheme of the invention is to provide a production process of the multi-solid waste filling material, which comprises the following steps:
step 1, preparing lead smelting water quenching slag micro powder: the raw material of the lead smelting water quenched slag enters a ball mill for grinding through metering and conveying equipment, and the micro powder with qualified granularity after grinding is conveyed to a lead smelting water quenched slag micro powder storage warehouse for storage;
the lead smelting water quenching slag micro powder is obtained by the following method: the method comprises the steps of feeding a lead smelting water quenched slag raw material into a raw material buffer bin through a loader, screening through a bar valve, quantitatively metering by a quantitative feeder in proportion, conveying the lead smelting water quenched slag raw material into a ball mill for grinding through a rubber belt conveyor, conveying the lead smelting water quenched slag micro-powder ground to a preset fineness into an air conveying chute through a grinding head double-channel heavy hammer discharger, conveying the air conveying chute to a powder bucket elevator, and conveying the powder discharged from a discharge port at the top of the elevator into a lead smelting water quenched slag micro-powder storage bin for storage through the air conveying chute.
Step 2, preparing cement clinker powder: the cement clinker enters a ball mill for grinding through metering and conveying equipment, and the ground clinker micropowder with qualified granularity is conveyed to a cement clinker micropowder storage warehouse for storage;
the cement clinker micropowder is obtained by the following method: the cement clinker is fed into a raw material buffer bin through a loader, is screened through a bar valve, is quantitatively measured in proportion through a quantitative feeder, is conveyed into a ball mill for grinding by a rubber belt conveyor, cement clinker micropowder ground to a certain fineness enters an air conveying chute from a grinding head double-channel heavy hammer discharger and is conveyed to a powder bucket elevator through the air conveying chute, and powder discharged from a discharge port at the top of the elevator enters a cement clinker micropowder storage bin for storage through the air conveying chute.
In the step 1 and the step 2, a deironing and dedusting process is further included, before the lead smelting water quenched slag raw material or the cement clinker is conveyed into the ball mill by the rubber belt conveyor, an iron material is removed by the magnetic separation device, and the raising dust generated in the conveying process of the lead smelting water quenched slag raw material or the cement clinker and the raising dust generated in the discharging process of the powder material out of the ball mill are collected by the bag type dust collection device.
In the step 1 and the step 2, the lead smelting water quenching slag raw material and the cement clinker are ground alternately by using the same billiard mill.
Step 3, stirring and homogenizing the powder: the method comprises the following steps of (1) respectively carrying out quantitative measurement on three powders of lead smelting slag micro powder from a lead smelting water-quenched slag micro powder storage warehouse, clinker powder from a cement clinker powder storage warehouse and slag powder from a slag powder storage warehouse in proportion through a double-body impeller feeder and a spiral feed metering scale below the respective storage warehouse, then feeding the measured powders into a mixer to be fully stirred and mixed, and feeding the uniformly mixed powders into a bucket elevator from an outlet of the mixer to be lifted into a powder storage warehouse for storage;
and 3, a dust removal process is also included, wherein a bag type dust collector is arranged at the top of the lead smelting water quenched slag micro-powder storage warehouse, the cement clinker powder storage warehouse, the slag powder storage warehouse and the powder storage warehouse after uniform stirring, the dust generated in the powder unloading process is collected, and the collected powder respectively enters the respective storage warehouse.
Step 4, full-gradation tailing thickening: stirring low-concentration full-graded tailing slurry from a lead ore dressing plant by a stirring tank, pumping by a plunger pump, then feeding into a tailing thickener, adding a flocculating agent into the thickener, and settling tailings in the full-graded tailing slurry in the thickener under the action of the flocculating agent to obtain high-concentration full-graded tailing slurry;
the low-concentration full-graded tailing material is a full-graded tailing material with the concentration of 20-30%;
the high-concentration full-graded tailing material is a full-graded tailing material with the concentration of 60-68%;
and taking the full-gradation tailing dry basis as a calculation reference, wherein the addition amount of the flocculating agent is 20-30 g/t.
Step 5, preparing a multi-solid waste filling material: bischofite, clinker and ammonia distillation waste residue from a raw material storage yard are quantitatively measured in proportion by a constant feeder, conveyed by a rubber belt conveyor, deironized by a suspension type permanent magnet self-unloading deironing device and then conveyed to a high-concentration stirring tank; the powder from the powder storage warehouse in the step 3 is metered by a constant feeder in proportion and then is conveyed to a high-concentration stirring tank; and (4) conveying the full-gradation tailing slurry from the step (4) to a high-concentration stirring tank through a shear pump, and stirring to obtain the multi-solid-waste filling material.
Further, in the step 1, the fineness of the lead smelting water-quenched slag entering the ball mill is less than or equal to 5mm, and the water content of the material entering the ball mill is less than or equal to 3%; the fineness of the lead smelting water-quenched slag micro-powder discharged from the ball mill is more than or equal to 400m2Per kg, the water content is less than or equal to 1 percent.
Further, in the step 2, the fineness of the cement clinker entering the ball mill is less than or equal to 25mm, the water content of the material entering the ball mill is less than or equal to 3%, and the fineness of the clinker micropowder discharged from the ball mill is more than or equal to 330m2Per kg, the water content is less than or equal to 1 percent.
The fifth technical scheme of the invention is to provide the application of the multi-solid waste filling material in the field of mine filling.
The multi-solid waste cementing material for the one-step mining and the two-step mining of the pouring layer comprises the following raw materials in percentage by mass: 36.51-40% of lead smelting water quenching slag micro powder, 21-21.75% of cement clinker micro powder, 10.43-12.90% of slag powder, 15.64-16.64% of lime slag, 0-5.49% of ammonia evaporation waste residue and 2.60-3.22% of bischofite;
the multi-solid waste cementing material for the one-step mining filling layer comprises the following components in percentage by mass: 40 to 43 percent of cement clinker, 20 to 21 percent of fine powder of cement clinker, 10.43 to 12.90 percent of slag powder, 16.64 to 18 percent of lime slag, 0 to 8.6 percent of ammonia still residue and 2.60 to 3.22 percent of bischofite;
the multi-solid waste cementing material for the two-step filling layer comprises the following components in percentage by mass: 43 to 45.16 percent, 19.35 to 20 percent of cement clinker micro powder, 10.43 to 12.90 percent of slag powder, 18 to 19.35 percent of lime slag, 0 to 13.04 percent of ammonia evaporation waste residue and 2.60 to 3.22 percent of bischofite.
The 7d compressive strength of the multi-solid waste filling material used for the one-step mining and the two-step mining pouring layer is more than or equal to 1.5MPa, and the 28d compressive strength is more than or equal to 4 MPa; the 7d compressive strength of the filling layer for one-step mining is more than or equal to 0.7MPa, and the 28d compressive strength is more than or equal to 2 MPa; the compressive strength of the two-step mining filling layer 28d satisfies self-setting.
The invention discloses the following technical effects:
(1) the ecological mine filling material is prepared by mixing and synergistically exciting the lead smelting water quenching slag micro powder, a small amount of cement clinker powder, slag melting slag, ammonia evaporation waste slag, bischofite, full-graded tailing sand and water according to a certain proportion, the mine filling material prepared by adopting cement is completely replaced, the resource and environmental pressure are relieved, and the ecological filling material with different slurry concentrations, different strengths and different slump degrees can be obtained.
(2) The preparation process of the ecological mine filling material provided by the invention can realize automatic continuous production, and is low in cost, energy-saving and environment-friendly.
(3) The ecological mine filling material product prepared by the preparation method has the same performance as the mine filling material product prepared by using cement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention;
fig. 2 is a schematic view of a mine filling area according to the present invention.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
A production process for preparing an ecological filling material by multi-solid waste cooperative coupling is shown in figure 1 and mainly comprises the following steps:
step 1, preparing lead smelting water quenching slag micro powder: the raw material of the lead smelting water quenched slag enters a ball mill for grinding through metering and conveying equipment, and the micro powder with qualified granularity after grinding is conveyed to a lead smelting water quenched slag micro powder storage warehouse for storage;
the lead smelting water quenching slag micro powder is obtained by the following method: the method comprises the steps of feeding a lead smelting water quenched slag raw material into a raw material buffer bin through a loader, screening through a bar valve, quantitatively metering by a quantitative feeder in proportion, conveying the lead smelting water quenched slag raw material into a ball mill for grinding through a rubber belt conveyor, conveying the lead smelting water quenched slag micro-powder ground to a preset fineness into an air conveying chute through a grinding head double-channel heavy hammer discharger, conveying the air conveying chute to a powder bucket elevator, and conveying the powder discharged from a discharge port at the top of the elevator into a lead smelting water quenched slag micro-powder storage bin for storage through the air conveying chute.
Step 2, preparing cement clinker powder: the cement clinker enters a ball mill for grinding through metering and conveying equipment, and the ground clinker micropowder with qualified granularity is conveyed to a cement clinker micropowder storage warehouse for storage;
the cement clinker micropowder is obtained by the following method: the cement clinker is fed into a raw material buffer bin through a loader, is screened through a bar valve, is quantitatively measured in proportion through a quantitative feeder, is conveyed into a ball mill for grinding by a rubber belt conveyor, cement clinker micropowder ground to a certain fineness enters an air conveying chute from a grinding head double-channel heavy hammer discharger and is conveyed to a powder bucket elevator through the air conveying chute, and powder discharged from a discharge port at the top of the elevator enters a cement clinker micropowder storage bin for storage through the air conveying chute.
In the step 1 and the step 2, a deironing and dedusting process is further included, before the lead smelting water quenched slag raw material or the cement clinker is conveyed into the ball mill by the rubber belt conveyor, an iron material is removed by the magnetic separation device, and the raising dust generated in the conveying process of the lead smelting water quenched slag raw material or the cement clinker and the raising dust generated in the discharging process of the powder material out of the ball mill are collected by the bag type dust collection device.
In the step 1 and the step 2, the lead smelting water quenching slag raw material and the cement clinker are ground alternately by using the same billiard mill.
Step 3, stirring and homogenizing the powder: the method comprises the following steps of (1) respectively carrying out quantitative measurement on three powders, namely lead smelting slag micro powder from a lead smelting water-quenched slag micro powder storage warehouse, clinker powder from a cement clinker powder storage warehouse, slag powder from a slag powder storage warehouse and the like according to a proportion, then fully stirring and homogenizing in a mixer, and storing in a powder storage warehouse after homogenizing;
and 3, a dust removal process is also included, wherein a bag type dust collector is arranged at the top of the lead smelting water quenched slag micro-powder storage warehouse, the cement clinker powder storage warehouse, the slag powder storage warehouse and the powder storage warehouse after uniform stirring, the dust generated in the powder unloading process is collected, and the collected powder respectively enters the respective storage warehouse.
Step 4, full-gradation tailing thickening: stirring the low-concentration full-graded tailing slurry from a lead ore dressing plant and a flocculating agent in a certain proportion in a thickener to realize rapid sedimentation of the tailing and obtain the high-concentration full-graded tailing slurry.
Step 5, preparing a multi-solid waste ecological filling material: proportionally and quantitatively measuring bischofite, chemical ash and ammonia distillation waste residue from a raw material yard, feeding into a high-concentration stirring tank, and stirring and mixing the powder quantitatively measured in proportion from the step (3) and the full-grade tailing slurry from the step (4) in the high-concentration stirring tank to prepare the ecological filling material with different strengths, different fluidity and different filling positions.
According to the process, the embodiment of the invention is as follows:
example 1
A multi-solid waste ecological filling material for a one-step mining and two-step mining pouring layer comprises the following raw materials by mass:
177.8kg of lead smelting water quenching slag micro powder, 105.9kg of cement clinker micro powder, 50.8kg of slag powder, 76.2kg of lime slag, 63.5kg of ammonia evaporation waste slag, 12.7kg of bischofite, 973.9kg of full-graded tailing, 513.3kg of circulating water and 19kg of flocculating agent;
according to the process flow shown in figure 1, the raw materials are mixed in a high-concentration stirring tank to obtain the multi-solid waste ecological filling material.
Wherein: the fineness of the lead smelting water quenching slag micro powder is 410m2Kg, the water content is less than or equal to 1 percent;
the fineness of the cement clinker micro powder is 350m2Per kg; the water content is less than or equal to 1 percent;
the flocculant is NT-208B (France Edison);
through tests, the slurry concentration of the multi-solid waste ecological filling material in the embodiment is 74%, the 7-day compressive strength is 1.68MPa, the 28-day compressive strength is 4.32MPa, and the slump is 27.8 cm.
Example 2
A multi-solid waste ecological filling material for a one-step mining filling layer comprises the following raw materials by mass:
134kg of lead smelting water quenching slag micro powder, 79.8kg of cement clinker micro powder, 38.3kg of slag powder, 57.4kg of lime slag, 47.9kg of ammonia evaporation waste residue, 9.6kg of bischofite, 1100.9kg of full-grade tailing, 515.7kg of circulating water and 22.01kg of flocculating agent;
according to the process flow shown in figure 1, the raw materials are mixed in a high-concentration stirring tank to obtain the multi-solid waste ecological filling material.
Wherein: the fineness of the lead smelting water quenching slag micro powder is 415m2Kg, the water content is less than or equal to 1 percent;
the fineness of the cement clinker micro powder is 350m2Per kg; the water content is less than or equal to 1 percent;
the flocculant is NT-208B (France Edison);
tests prove that the slurry concentration of the multi-solid waste ecological filling material is 74%, the 7-day compressive strength is 1.02MPa, the 28-day compressive strength is 2.32MPa, and the slump is 27.5 cm.
Example 3
A multi-solid waste ecological filling material for a two-step filling layer comprises the following raw materials by mass:
41.7kg of lead smelting water quenching slag micro powder, 24.8kg of cement clinker micro powder, 11.9kg of slag powder, 17.9kg of lime slaking slag, 14.9kg of ammonia evaporation waste slag, 3kg of bischofite, 1370.4kg of full-grade tailing, 521.62kg of circulating water and 27.4kg of flocculating agent;
according to the process flow shown in figure 1, the raw materials are mixed in a high-concentration stirring tank to obtain the multi-solid waste ecological filling material.
Wherein: the fineness of the lead smelting water quenching slag micro powder is 420m2Kg, the water content is less than or equal to 1 percent;
the fineness of the cement clinker micro powder is 350m2Per kg; the water content is less than or equal to 1 percent;
the flocculant is NT-208B (France Edison);
through tests, the slurry concentration of the multi-solid waste ecological filling material in the embodiment is 74%, the 28-day compressive strength is 0.28MPa, and the slump is 27.9 cm.
Comparative example 1
Preparing a cement filling material, wherein the raw materials are as follows:
379.1kg of cement clinker micro powder, 1395.6kg of full-graded tailing, 490.4kg of circulating water and 27.91kg of flocculating agent;
wherein, the used cement clinker micro powder, full-graded tailing and flocculating agent are the same as those in the embodiment 1.
And mixing the raw materials in a high-concentration stirring tank to obtain the cement filling material.
The test shows that the slurry concentration of the filling material prepared in comparative example 1 is 72%, the 7-day compressive strength is 1.56MPa, the 28-day compressive strength is 4.3MPa, and the slump is 27.2 cm.
It can be seen from the comparison between the data of example 1 and comparative example 1 that the cement dosage used in example 1 is only 27.93% of that used in comparative example 1, but the ecological filling material prepared in example 1 has better mechanical properties and working performance than the cement filling material of comparative example 1.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (10)

1. The multi-solid waste cementing material is characterized in that the raw materials comprise the following components in percentage by mass:
36.51-45.16% of lead smelting water quenching slag micro powder, 19.35-21.75% of cement clinker micro powder, 10.43-12.90% of slag powder, 15.64-19.35% of lime slag, 0-13.04% of ammonia evaporation waste slag and 2.60-3.22% of bischofite;
the fineness of the lead smelting water-quenched slag micro powder is more than or equal to 400m2Per kg; the fineness of the cement clinker micro powder is more than or equal to 330m2/kg。
2. A multi-solid waste filling material, which is characterized by comprising the multi-solid waste cementing material of claim 1 and full-grade tailings; the full-grade tailing is full-grade tailing of lead ore.
3. The multi-solid waste filling material as claimed in claim 2, wherein the rubber-sand ratio of the multi-solid waste filling material is 1:2 to 1: 12.
4. The method for preparing a multi-solid waste packing material according to any one of claims 2 to 3, comprising the steps of: and mixing the lead smelting water quenching slag micro powder, cement clinker micro powder, slag melting, ammonia evaporation waste slag, bischofite, full-grade tailing and water to ensure that the concentration of slurry is 70-74 percent, thus obtaining the multi-solid waste filling material.
5. The preparation method according to claim 4, wherein the full-grade tailings are prepared into full-grade tailings slurry by water, then the full-grade tailings are thickened by a flocculating agent, and then mixed with the lead smelting water quenching slag micro powder, the cement clinker micro powder, the slag ash, the ammonia evaporation waste slag and the bischofite.
6. The preparation method of the tailing sand of the full-graded tailing sand of the high-efficiency coal mine is characterized in that the addition amount of the flocculating agent is 20-30 g/t on the basis of the dry basis of the tailing sand of the full-graded tailing sand.
7. A process for producing a multi-solid waste packing material according to any one of claims 2 to 3, comprising the steps of:
step 1, preparing lead smelting water quenching slag micro powder: the lead smelting water-quenched slag raw material enters a ball mill for grinding through metering and conveying equipment, and the fineness of the ground raw material is more than or equal to 400m2Conveying the/kg micro powder to a lead smelting water quenching slag micro powder storage warehouse for storage;
step 2, preparing cement clinker powder: the cement clinker enters a ball mill for grinding through a metering and conveying device, and the fineness of the ground cement clinker is≥330m2Conveying/kg clinker micropowder to a cement clinker micropowder storage warehouse for storage;
step 3, stirring and homogenizing the powder: the method comprises the following steps of (1) respectively carrying out quantitative measurement on three powders of lead smelting slag micro powder from a lead smelting water-quenched slag micro powder storage warehouse, clinker powder from a cement clinker powder storage warehouse and slag powder from a slag powder storage warehouse in proportion through a double-body impeller feeder and a spiral feed metering scale below the respective storage warehouse, then feeding the measured powders into a mixer to be fully stirred and mixed, and feeding the uniformly mixed powders into a bucket elevator from an outlet of the mixer to be lifted into a powder storage warehouse for storage;
step 4, full-gradation tailing thickening: stirring low-concentration full-graded tailing slurry from a lead ore dressing plant by a stirring tank, pumping by a plunger pump, then feeding into a tailing thickener, adding a flocculating agent into the thickener, and settling tailings in the full-graded tailing slurry in the thickener under the action of the flocculating agent to obtain high-concentration full-graded tailing slurry;
the low-concentration full-graded tailing material is a full-graded tailing material with the concentration of 20-30%;
the high-concentration full-graded tailing material is a full-graded tailing material with the concentration of 60-68%;
step 5, preparing a multi-solid waste filling material: bischofite, clinker and ammonia distillation waste residue from a raw material storage yard are quantitatively measured in proportion by a constant feeder, conveyed by a rubber belt conveyor, deironized by a suspension type permanent magnet self-unloading deironing device and then conveyed to a high-concentration stirring tank; the powder from the powder storage warehouse in the step 3 is metered by a constant feeder in proportion and then is conveyed to a high-concentration stirring tank; and (4) conveying the full-gradation tailing slurry from the step (4) to a high-concentration stirring tank through a shear pump, and stirring to obtain the multi-solid-waste filling material.
8. The production process according to claim 7, wherein in the step 1, the fineness of the lead smelting water-quenched slag entering the ball mill is less than or equal to 5mm, and the water content is less than or equal to 3%; the fineness of the lead smelting water-quenched slag micro-powder discharged from the ball mill is more than or equal to 400m2Per kg, the water content is less than or equal to 1 percent.
9. Production according to claim 7The process is characterized in that in the step 2, the fineness of the cement clinker entering the ball mill is less than or equal to 25mm, the water content is less than or equal to 3%, and the fineness of the clinker micropowder discharged from the ball mill is more than or equal to 330m2Per kg, the water content is less than or equal to 1 percent.
10. Use of the multi-solid waste filling material according to any one of claims 2 to 3 in the field of mine filling.
CN202111512396.4A 2021-12-08 2021-12-08 Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material Pending CN114057415A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115321897A (en) * 2022-03-28 2022-11-11 西安建筑科技大学 Low-carbon cementing material with high early strength and processing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2235526A1 (en) * 1997-04-24 1998-10-09 Henghu Sun High pulp density fast setting and high early strength backfill method and material
CN105198247A (en) * 2015-09-16 2015-12-30 鞍钢集团矿业公司 Method for preparing full-tailing cementing material with sintering and desulfurization ash
CN109265120A (en) * 2018-09-27 2019-01-25 深圳市颐泰中和科技有限公司 A kind of filling in mine material and its preparation facilities and preparation method and cementing agent for filling in mine slurry
CN111302741A (en) * 2020-04-14 2020-06-19 西安建筑科技大学 Ecological cementing material prepared from lead-zinc slag and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2235526A1 (en) * 1997-04-24 1998-10-09 Henghu Sun High pulp density fast setting and high early strength backfill method and material
CN105198247A (en) * 2015-09-16 2015-12-30 鞍钢集团矿业公司 Method for preparing full-tailing cementing material with sintering and desulfurization ash
CN109265120A (en) * 2018-09-27 2019-01-25 深圳市颐泰中和科技有限公司 A kind of filling in mine material and its preparation facilities and preparation method and cementing agent for filling in mine slurry
CN111302741A (en) * 2020-04-14 2020-06-19 西安建筑科技大学 Ecological cementing material prepared from lead-zinc slag and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
孙传尧: "《选矿工程师手册(第2册)》", 31 March 2015, 冶金工业出版社 *
陈进利等: "有色冶金废渣综合利用现状及发展趋势", 《中国资源综合利用》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115321897A (en) * 2022-03-28 2022-11-11 西安建筑科技大学 Low-carbon cementing material with high early strength and processing method thereof

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