CN109824309A - A method of acidproof ore aggregate is prepared using geopolymeric reaction - Google Patents
A method of acidproof ore aggregate is prepared using geopolymeric reaction Download PDFInfo
- Publication number
- CN109824309A CN109824309A CN201910289191.0A CN201910289191A CN109824309A CN 109824309 A CN109824309 A CN 109824309A CN 201910289191 A CN201910289191 A CN 201910289191A CN 109824309 A CN109824309 A CN 109824309A
- Authority
- CN
- China
- Prior art keywords
- ore
- aggregate
- acidproof
- fine fraction
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
-
- 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
- C04B28/006—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 containing mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/23—Acid resistance, e.g. against acid air or rain
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of methods for preparing acidproof ore aggregate using geopolymeric reaction.Present invention fine fraction ore or the high thick smitham of fine fraction content are raw material, and wherein fine fraction ore is less than -200 mesh, and -200 mesh content of thickness grain mixed ore is greater than 5%.After raw material and metakaolin mix well, then a certain proportion of alkali activating agent solution is added, generates aggregate using rotary drum.Then solidify the regular hour at normal temperature or at relatively high temperature, prepare agglomerates.The granularity of ore aggregate of the invention is much larger than raw material and acid resistance is strong, is conducive to the infiltration of ore aggregate in acid condition and leaches.The present invention uses geopolymeric reaction agglomerated ore for the first time, make partially due to fine fraction content is high and the ore that is difficult to be utilized is fully utilized, alkali-activator and kaolin abundance and dosage is small, so that cost is relatively low, process flow is simple and efficient, and it is economical and practical, there is good industrial prospect and social benefit.
Description
Technical field
The invention belongs to ore aggregate preparation fields, and in particular to a kind of to prepare acidproof ore using geopolymeric reaction
The method of aggregate.
Background technique
Mineral Resources in China is abundant, mineral processing industry high speed development.In some cases, ore contains higher particulate
Grade, or broken rear fine fraction content are higher.Ore fine fraction content height be in some cases it is unfavorable, such as fine fraction in dump leaching
Content height will affect the permeability of mine heap, cause leaching process that can not carry out.Therefore, there is the ore of good nature to reunite for preparation
Body is further processed certain meaning for ore.In the existing technology for preparing ore aggregate.Mainly will
Liquid and gelling agent are mixed with ore, or only adding liquid, and in rotary drum, belt prepares ore group in the equipment such as pan pelletizer
Aggressiveness.
Ore aggregate should have good property, and if granularity is big, stability is good.Ore aggregate is protected in acid condition
Keeping steady qualitative is a challenge.Currently, preparing acid proof aggregate has certain be stranded due to the shortage of acid resistance gelling agent
It is difficult.Which has limited application of the ore aggregate under acidic environment, such as ore dump leaching under acidic environment, it is difficult to formed stablize and
The mine heap of good penetrability.
The ore aggregate prepared using geopolymeric reaction has granularity big, and compression strength is high, stable under acidic conditions
The good feature of property.New approach is provided for the application of ore aggregate in acid condition.To realize to ore into one
Step utilizes.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide it is a kind of it is easy, efficiently, economical polymerize with geology
The method for preparing acidproof ore aggregate is reacted, raw material sources are abundant, and process flow is simple, efficient, effectively raise mine
The property of stone aggregate, and it is economical and practical, environmentally protective.The present invention thickness grain high using fine fraction ore or fine fraction content
Mixed ore forms aggregate after mixing in rotary drum with metakaolin, alkali activating agent solution, at a certain temperature cured skill
Art route.In the present invention, the coarse fraction and acid resistance of ore aggregate are by drum rotating speed, rotary drum inclination angle and ore
The control of residence time in rotary drum and to alkali-activator dosage, type and proportion, water additive amount, metakaolin addition
Amount, curing time, what the control of solidification temperature was realized.The formation of acidproof aggregate is primarily due to that geology polymerization has occurred instead
It answers, generates geo-polymer gel.Fig. 5 shows the infrared light of the ore aggregate formed under different metakaolin additive amounts
Spectrogram.Wave band at about 1000 is the Si-O-Si key (1123/cm) of silicate derivative, remains the Si-O-of metakaolin
Al key (1078/cm), (T is tetrahedral Si to the asymmetric stretch key Si-O-T (980/cm) of geo-polymer gel
Or Al) and hydrated calcium silicate gel Si-O key stretching vibration (970/cm) overlapping work as metakaolin additive amount
Increase, the enhanced strength of Si-O-T key, shows the formation of metakaolin stimulation geology polymer gel.Moreover, peak becomes wider,
Embodiment forms more silicate derivatives and hydrated calcium silicate gel.
To achieve the above object, the present invention adopts the following technical scheme:
A method of using geopolymeric reaction agglomerated ore, the specific steps of which are as follows:
Step 1, the high thickness grain mixed ore of the fine fraction ore or fine fraction content obtained with different grinding modes are original
Mine.
Step 2, raw ore and metakaolin are transported in the rotary drum of inclination and rotation and are mixed well with certain proportion,
The nozzle or perforated pipe that alkali activating agent solution is distributed in 2/3 length before rotary drum are added in ore within a certain period of time.
Step 3, by the control of the residence time to drum rotating speed, rotary drum inclination angle and ore in rotary drum and
To alkali-activator dosage, type and proportion, water additive amount, the control of metakaolin additive amount obtains granularity more macro aggregate.
Step 4: aggregate solidifies the regular hour under room temperature or higher temperature, and it is big to obtain granularity, and compression strength is high,
The good aggregate of acid resistance.
Further, in the step 1, the fine fraction ore is less than -200 mesh, the thickness grain mixed ore -200
Mesh content is greater than 5%.
It further, is the 1/3 of ore residence time in the certain time in the step 2.
Further, in the step 3, the rotary drum revolving speed is the 30% ~ 50% of critical speed, and rotary drum inclination angle is 10 ° of left sides
The right side, residence time of the ore in rotary drum are 1 ~ 3min, and the alkali activating agent solution includes NaOH, KOH, Na2CO3、K2CO3 、
Na2SiO3And K2SiO3One or more of the aqueous solution that is configured to, the final concentration of 0.2-0.6g/ of solute in solution
ML, in the alkali activating agent solution of addition, the quality of solute is the 4-5% of ore quality, and the additive amount of metakaolin is ore quality
1-5%.
Further, in the step 4, the room temperature is 30 DEG C hereinafter, the higher temperature is 40 ~ 60 DEG C, described solid
Changing the time is 1 ~ 9 day.
Remarkable advantage of the invention is:
(1) the agglomeration devices simple structure of the invention used, alkali-activator that is cheap, and using, metakaolin dosage is small,
It is cheap, reduce the production cost of ore aggregate；
(2) the high thick smitham of the fine fraction ore or fine fraction content that the present invention utilizes part poorly is utilized.
If fine fraction content is high, poor permeability when dump leaching and the Low Grade Copper Ore for being difficult to dump leaching, to realize making full use of for resource；
(3) preparation process is without carrying out at high temperature, and room temperature can be obtained that granularity is big, the good aggregate of acid resistance；
(4) preparation process is simple, easily operated, convenient for promoting.
Detailed description of the invention
Fig. 1 is the pattern comparison diagram of ore aggregate and raw ore made from embodiment 1, and wherein A is raw ore;B is ore
Aggregate.
Fig. 2 is cumulative yield distribution curve under the sieve of ore aggregate made from embodiment 1 and raw ore.
Fig. 3 is the fine fraction mobility figure after ore aggregate made from embodiment 3 impregnates for 24 hours in the case where pH is 1.
Fig. 4 is cumulative yield point under the sieve of ore aggregate in the case of difference metakaolin additive amount made from embodiment 3
Cloth curve.
Fig. 5 is the infrared spectrogram of the ore aggregate formed under different metakaolin additive amounts.
Specific embodiment
In order to make content of the present invention easily facilitate understanding, With reference to embodiment to of the present invention
Technical solution is described further, but the present invention is not limited only to this.
Embodiment 1
With the high thickness grain mixed ore of 300g fine fraction content (lower than the ore that the content of 200 mesh is higher than 5%) for raw ore, with
After 9g metakaolin mixes well, it is poured into the rotary drum of plastics straight tube bottle production of high density polyethylene (HDPE) material.11.25g
Na2SiO3It is dissolved in 30mL water with 3.75g NaOH and forms alkali activating agent solution, alkali activating agent solution is uniformly sprayed onto ore.
After drum rotating 3min, the aggregate to be formed is poured out, solidifies 3d under the conditions of 30 DEG C of temperature below, obtains final reunion
Body.As can be seen from Figure 2 the granularity of ore aggregate is significantly greater than raw ore；- 200 mesh content of raw ore is big as can be seen from Figure 3
In 10%, the content of -1.6mm is greater than 50%, belongs to the high ore of fine fraction content.After forming aggregate, d10Become from 0.07mm
9.52mm d5016.61mm is become from 1.52mm, ore agglomerate particle size is significantly increased compared with raw ore.
Embodiment 2
Using 300g fine fraction (being lower than 200 mesh), ore is raw ore, and after mixing well with 12g metakaolin, it is poly- to be poured into high density
In the rotary drum of the plastics straight tube bottle production of ethylene material.12g Na2SiO3It is dissolved in 75mL water with 3g NaOH and forms alkali-activator
Solution, alkali activating agent solution are uniformly sprayed onto ore.After drum rotating 3min, the aggregate to be formed is poured out, at 30 DEG C of temperature
Solidify 5d under the conditions of below, obtains final aggregate.
Embodiment 3
With the high thickness grain mixed ore of 6 parts of 300g fine fraction contents (lower than the ore that the content of 200 mesh is higher than 5%) for raw ore,
With 0, after 3,6,9,12,15g metakaolins mix well, it is successively poured into the plastics straight tube bottle system of high density polyethylene (HDPE) material
In the rotary drum of work.12g Na2SiO3It is dissolved in 27mL water with 3g NaOH and forms alkali activating agent solution, alkali activating agent solution uniformly sprays
It is spread across in ore.After drum rotating 3min, the aggregate to be formed is poured out, solidifies 3d under the conditions of 30 DEG C of temperature below, obtains
Final aggregate.Fine fraction mobility after the aggregate of acquisition impregnates for 24 hours in the case where pH is 1 is shown in Fig. 4.Without higher
When ridge soil adds, ore aggregate acid resistance is poor, and fine fraction mobility is higher than 45%；In the metakaolin for being added to 1wt.%,
Ore aggregate acid resistance significantly improves, and fine fraction mobility is down to 12.46%；When adding the metakaolin of 2wt.%, due to alkali
Excite water in agent solution constant, the granularity of ore aggregate significantly reduces (Fig. 5), increases fine fraction mobility；Higher ridge
When native additive amount is more than 3%, more geo-polymers are formed in ore aggregate, ore aggregate acid resistance is strong.
Wherein, fine fraction mobility refers to: ore aggregate pH be 1 in the case where impregnate fall off afterwards for 24 hours be less than 1.6mm
Ore mass percent and raw ore in be less than 1.6mm ore mass percent subtract in ore aggregate be less than 1.6mm
The ratio between mass percent of ore.
The infrared spectrogram of the ore aggregate formed under different metakaolin additive amounts is shown in Fig. 5, the wave at about 1000
Section is the Si-O-Si key (1123/cm) of silicate derivative, remains the Si-O-Al key (1078/cm) of metakaolin, ground
The asymmetric stretch key Si-O-T (980/cm) (T is tetrahedral Si or Al) and aquation silicic acid of matter polymer gel
The overlapping of the Si-O key stretching vibration (970/cm) of calcium gel increases when the additive amount of metakaolin, the intensity of Si-O-T key
Enhancing shows the formation of metakaolin stimulation geology polymer gel.Moreover, peak becomes wider, embodiment forms more silicon
Acid salt derivant and hydrated calcium silicate gel.
Embodiment 4
With the high thickness grain mixed ore of 300g fine fraction content (lower than the ore that the content of 200 mesh is higher than 5%) for raw ore, with
After 6g metakaolin mixes well, it is poured into the rotary drum of plastics straight tube bottle production of high density polyethylene (HDPE) material.15g
Na2SiO3It is dissolved in 30mL water and forms alkali activating agent solution, alkali activating agent solution is uniformly sprayed onto ore.Drum rotating 3min
Afterwards, the aggregate to be formed is poured out, solidifies 2d under conditions of 40 ~ 60 DEG C of temperature, obtains final aggregate.
Embodiment 5
Using 300g fine fraction (being lower than 200 mesh), ore is raw ore, and after mixing well with 15g metakaolin, it is poly- to be poured into high density
In the rotary drum of the plastics straight tube bottle production of ethylene material.11.25g Na2SiO3It is dissolved in 75mL water with 3.75g NaOH and forms alkali
Agent solution is excited, alkali activating agent solution is uniformly sprayed onto ore.After drum rotating 3min, the aggregate to be formed is poured out, in temperature
Solidify 2d under conditions of 40 ~ 60 DEG C of degree, obtains final aggregate.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (10)
1. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, it is characterised in that: with fine fraction ore or
It is raw material containing the more thickness grain mixed ore of fine fraction, metakaolin and alkali activating agent solution is added, by ore, metakaolin
It is mixed in rotary drum with alkali activating agent solution, the aggregate being mixed to get solidifies in air, obtains that granularity is big and acid resistance is good
Aggregate.
2. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction according to claim 1, feature
Be: the thickness grain mixed ore more containing fine fraction includes the mine that fine fraction content is high after fine fraction content is high or broken
One or more of stone.
3. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction according to claim 2, feature
Be: the fine fraction content height refers to that the content less than 200 mesh is higher than 5%.
4. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, feature exist according to claim 1
It is made after: metakaolin is calcined by water-washed kaoline；Metakaolin makes specific steps are as follows: water-washed kaoline is passed through heating
To 800 DEG C, 6h is kept the temperature, then room temperature is air-cooled to furnace, obtains metakaolin.
5. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, feature exist according to claim 1
In: the additive amount of metakaolin is the 1-5% of ore quality.
6. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, feature exist according to claim 1
In: the alkali activating agent solution includes NaOH, KOH, Na2CO3、K2CO3 、Na2SiO3And K2SiO3One or more of match
Manufactured aqueous solution, the final concentration of 0.2-0.6g/mL of solute in solution.
7. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, feature exist according to claim 1
In in the alkali activating agent solution of the addition, the quality of solute is the 4-5% of ore quality.
8. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, feature exist according to claim 1
In: rotary drum is a barrel-shaped and built-in lifting plate, is 10 ° or so with horizontal direction angle.
9. a kind of method for preparing acidproof ore aggregate using geopolymeric reaction, feature exist according to claim 1
In: aggregate solidify be lower than 30 DEG C or 0 ~ 60 DEG C at a temperature of carry out, curing time is 1 ~ 9 day.
10. a kind of ore aggregate as made from claim 1-9 described in any item methods, it is characterised in that: ore is reunited
Body is bigger compared with original ore size and the acid resistance that has had.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289191.0A CN109824309B (en) | 2019-04-11 | 2019-04-11 | Method for preparing acid-resistant ore aggregate by utilizing geopolymerization reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289191.0A CN109824309B (en) | 2019-04-11 | 2019-04-11 | Method for preparing acid-resistant ore aggregate by utilizing geopolymerization reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109824309A true CN109824309A (en) | 2019-05-31 |
| CN109824309B CN109824309B (en) | 2021-07-27 |
Family
ID=66874421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910289191.0A Expired - Fee Related CN109824309B (en) | 2019-04-11 | 2019-04-11 | Method for preparing acid-resistant ore aggregate by utilizing geopolymerization reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109824309B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195157A (en) * | 2019-07-05 | 2019-09-03 | 福州大学 | Low Grade Copper Ore briquetting-the biological dump leaching process crushed based on high-pressure roller mill |
| WO2022056560A1 (en) * | 2020-09-14 | 2022-03-17 | Mintek | Binder for an agglomeration process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802914A (en) * | 1985-05-21 | 1989-02-07 | Union Carbide Corporation | Process for agglomerating mineral ore concentrate utilizing dispersions of polymer binders or dry polymer binders |
| CN101238240A (en) * | 2006-03-16 | 2008-08-06 | 瓦利·德·利奥多斯公司 | A material for coating iron ore pelletizing disks and drums and a constructive arrangement for pelletizing disks and drums |
| CN102633519A (en) * | 2012-05-08 | 2012-08-15 | 信阳师范学院 | Light inorganic mineral polymeric material with expanded perlite and natural zeolite as main materials, and preparation method of the light inorganic mineral polymeric material |
| CN104003632A (en) * | 2014-06-13 | 2014-08-27 | 福州大学 | Method for preparing inorganic mineral polymers through lead and zinc mine tailings |
| CN106086401A (en) * | 2016-06-23 | 2016-11-09 | 北京科技大学 | A kind of method inorganic polymer being applied in iron mineral powder agglomeration technique |
| CN109503003A (en) * | 2018-11-23 | 2019-03-22 | 昆明理工大学 | A method of geo-polymer is prepared using oxidizing type of gold ore dump leaching tailings |
-
2019
- 2019-04-11 CN CN201910289191.0A patent/CN109824309B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802914A (en) * | 1985-05-21 | 1989-02-07 | Union Carbide Corporation | Process for agglomerating mineral ore concentrate utilizing dispersions of polymer binders or dry polymer binders |
| CN101238240A (en) * | 2006-03-16 | 2008-08-06 | 瓦利·德·利奥多斯公司 | A material for coating iron ore pelletizing disks and drums and a constructive arrangement for pelletizing disks and drums |
| CN102633519A (en) * | 2012-05-08 | 2012-08-15 | 信阳师范学院 | Light inorganic mineral polymeric material with expanded perlite and natural zeolite as main materials, and preparation method of the light inorganic mineral polymeric material |
| CN104003632A (en) * | 2014-06-13 | 2014-08-27 | 福州大学 | Method for preparing inorganic mineral polymers through lead and zinc mine tailings |
| CN106086401A (en) * | 2016-06-23 | 2016-11-09 | 北京科技大学 | A kind of method inorganic polymer being applied in iron mineral powder agglomeration technique |
| CN109503003A (en) * | 2018-11-23 | 2019-03-22 | 昆明理工大学 | A method of geo-polymer is prepared using oxidizing type of gold ore dump leaching tailings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195157A (en) * | 2019-07-05 | 2019-09-03 | 福州大学 | Low Grade Copper Ore briquetting-the biological dump leaching process crushed based on high-pressure roller mill |
| WO2022056560A1 (en) * | 2020-09-14 | 2022-03-17 | Mintek | Binder for an agglomeration process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109824309B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104446045A (en) | Alkali-activated cementing material and preparation method thereof | |
| CN109970402A (en) | A kind of regeneration concrete and preparation method thereof using discarded concrete | |
| CN106076244A (en) | A kind of preparation method of the long-life lithium ion sieve adsorbant of nano-oxide cladding | |
| CN103382124B (en) | A kind of molybdenum tailings air-entrained concrete building block and preparation method thereof | |
| CN1252781A (en) | High pulp density, fast setting and high early strength backfill method and material | |
| CN106630700B (en) | It is a kind of using flyash and cullet as inorganic coagulation material of raw material and preparation method thereof | |
| CN107235679A (en) | A kind of graphene enhancing water-permeable brick and preparation method thereof | |
| CN103396158B (en) | A kind of Antibacterial molybdenum tailings air-entrained concrete building block and preparation method thereof | |
| CN109824309A (en) | A method of acidproof ore aggregate is prepared using geopolymeric reaction | |
| CN102963920B (en) | Method for purifying glauberite to prepare dihydrate gypsum | |
| CN113754364B (en) | Artificial aggregate based on muck sand washing tail mud and preparation method thereof | |
| CN105481272A (en) | Manufacturing methods of geopolymer and precursor thereof, product and application | |
| CN103965918A (en) | Curing agent for water quenching manganese slag mollisol | |
| CN113956011B (en) | Semi-hydrated phosphogypsum-based filling aggregate and preparation method thereof | |
| CN110272051A (en) | The method for preparing white oxide silicon nano material using oil shale semi-coke | |
| CN107935468B (en) | Method for producing baking-free environment-friendly ecological brick by using sludge | |
| CN114368925A (en) | Method for preparing lightweight aggregate by using engineering mud | |
| CN109133812A (en) | A kind of processing method of electrolytic manganese residues | |
| CN103910481A (en) | Method for carrying out curing treatment on landfill leachate membrane concentration solution sludge by using novel curing agent | |
| CN108516713A (en) | A kind of pretreatment of ardealite and application process | |
| CN102515237A (en) | Method for preparing nanometer CaCO3 from calcium carbide slag through ultrasonic process | |
| CN112979321A (en) | Method for utilizing drilling waste | |
| CN106220064A (en) | Intensifying regenerating concrete coarse aggregate, preparation method and application | |
| CN108408752A (en) | A method of efficiently preparing micron order calcite | |
| CN113248191B (en) | Inert concrete waste slurry solidified material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |