CN1216005C - Floor tile made of oil field sludge and its production process - Google Patents
Floor tile made of oil field sludge and its production process Download PDFInfo
- Publication number
- CN1216005C CN1216005C CN031390528A CN03139052A CN1216005C CN 1216005 C CN1216005 C CN 1216005C CN 031390528 A CN031390528 A CN 031390528A CN 03139052 A CN03139052 A CN 03139052A CN 1216005 C CN1216005 C CN 1216005C
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- CN
- China
- Prior art keywords
- oil field
- solidifying agent
- floor tile
- field sludge
- cement
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- Expired - Fee Related
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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
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; 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
- 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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- 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
- C04B2111/60—Flooring materials
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The present invention relates to a floor tile and a production method thereof, particularly to the floor tile prepared from oil field sludge through curing agents and the production method thereof. Base materials of the floor tile of the present invention mainly comprise raw materials with a weight proportion: 30 to 60% of oil field sludge, 15 to 40% of river sand, 15 to 30% of cement, 0 to 35% of fly ash and 1 to 8% of curing agent. The floor tile of the present invention has the advantages of high strength and no pollution. The requirement of ecological environment protection is obtained. The problems of pollution and discharge of oil field sludge are solved. The production method has the advantages of simple manufacturing process and easy manufacture.
Description
(1) technical field under
The present invention relates to a kind of floor tile and production method thereof, particularly a kind of floor tile and production method thereof of utilizing oil field sludge to make.
(2) background technology
Oil well mud is the blood of petroleum drilling engineering, development along with petroleum industry, the output of oil well mud is more and more, and generally all contains a large amount of heavy metals, oils, alkali and chemicals (comprising organism) etc. to people, animal and the very deleterious material of environment in these numerous oil well mud.Mud with the back when discarded if without processing, these materials will serious environment pollution, harm people's life and healthy influences vegeto-animal g and D.
The processing of oily sludge and application are more scabrous problems in the oily water treatment process.The West Europe and the U.S. adopt biotechnology, physico-chemical processes etc. carry out that oily sludge is handled and the history of the comprehensive utilization process technology of mud existing decades, main technique comprises that mud concentrates, conditioning, dehydration, innoxious curing, thermal treatment, biological treatment, technology such as pyroprocessing, the wherein biological treatment of mummification oily sludge, disposal technology, the research of high-temperature technology and curing technology comparatively comes into one's own, because oily sludge is to be the organism of main organic composition with petroleum hydrocarbon, thereby biological treatment is exactly to utilize the microbiological deterioration petroleum hydrocarbon to reduce the harm of oily sludge to environment with disposal technology; The pyroprocessing technology is to utilize heat energy to reclaim hydrocarbons from oily sludge, and this technology is carried out in confined conditions, thereby can reduce the pollution to surrounding environment; Solidification processing method is the solidifying agent that adds definite composition in oil field sludge mostly, makes it that certain physics chemical reaction take place, and solidifies moisture and a part of toxic substance in the oil field sludge, and makes it have certain intensity, so that stack or storage.
Aspect the comprehensive utilization of oily sludge, the main direction of utilizing is the research of material of construction, promptly considers with the oil field sludge to be main raw material, adopts certain explained hereafter ecological architectural material, make oil field sludge become resource reutilization on the one hand, turn waste into wealth, be the certain value of society's creation.Solidify the toxic substance in the oil field sludge on the other hand, prevent the pollution of oil field sludge, preserve the ecological environment, prevent polluted underground water and harm personnel safety, meet national state basic policy and industrialization policy.
At present, China relatively is suitable for utilizing curing technology to come oil field sludge is handled.But existing technology, the on the one hand solidification intensity requirement that do not reach composition brick is the requirement that does not reach Ecological Building Materials on the other hand, it contains basicity, toxotest, radio-activity testing and does not meet building standard.
(3) summary of the invention
The present invention provides the intensity height that utilizes oil field sludge to make in order to overcome above deficiency, reaches the production method of the floor tile of ecological, environmental protective requirement.
The present invention realizes by following measure:
The invention discloses a kind of production method of utilizing the floor tile that oil field sludge makes, carry out according to the following steps successively,
It is thick that the color starch adhesive body that a) will mix injects the interior 1-2cm of mould, places half an hour;
B) body material with the following weight proportioning mixes, and injects in the above-mentioned mould, and it is closely knit to be vibrated to slurry on shaking table, floating matrix surface, the maintenance 1-2 days demoulding;
Described body material is made up of following materials of weight proportions:
Oil field sludge: 30-60%
River sand: 15-40%
Cement: 15-30%
Flyash: 0-35%
Solidifying agent: 1-8%
Described solidifying agent contains the following weight proportion raw material:
Sulplo-aluminate: 15%-25% calcium stearate: 0-10%
Calcium chloride: 0-25% calcium acetate: 0-15%
Fluorite: 0-10% gelatin: 5%-10%
Gypsum: 10%-25% lime: 10%-30%
Acrylic resin 0-5%.
The production method of floor tile of the present invention, the optimum weight proportioning of described body material is:
Oil field sludge: 30-50%
River sand: 15-30%
Cement: 15-25%
Flyash: 10-30%
Solidifying agent: 2-6%
Described solidifying agent preferably contains the following weight proportion raw material,
Sulplo-aluminate: 15%-25% calcium stearate: 0-10%
Calcium chloride: 10%-25% calcium acetate: 0-15%
Fluorite: 4%-10% gelatin: 5%-10%
Gypsum: 10%-25% lime: 10%-30%
Acrylic resin 0-5%.
The production method of floor tile of the present invention, in order further to improve the over-all properties of floor tile, described solidifying agent also adds and accounts for the core material that the solidifying agent weight percent is 8-10%, and wherein the raw material weight proportioning of core material is:
| CaO | MgO | Fe 2O 3 | SiO 2 | Al 2O 3 | Al 2(SO 4) 4 | Na 2CO 3 | FeSO 4 | MgSO 4 |
| 5-10 | 5-10 | 5-10 | 6-15 | 8-15 | 2-20 | 10-20 | 5-20 | 5-20 |
Below curing mechanism of the present invention be further described:
1 solidifying agent solidifies the curing mechanism of oil field sludge
Means of testing such as this research and utilization D/max-rA type x-ray diffractometer and S-2500 type scanning electronic microscope are studied the curing mechanism of oil field sludge building ground ornamental slab for paving the floor of the present invention.
1.1 X-ray diffraction analysis
X-ray diffraction as shown in Figure 1, seldom can see the principal crystalline phase-calcite in the mud raw material in the ground ornamental slab for paving the floor after curing, the quartz in the filler river sand, also see more ettringite is arranged, mineral such as hydrated calcium silicate, carbon calcium aluminate and drated calcium aluminate.
1.2 Electronic Micro-Analysis
Scanning electron photomicrograph as shown in Figures 2 and 3, Fig. 2 is the electron photomicrograph that oil field sludge ground ornamental slab for paving the floor solidified 7 days, Fig. 3 is the electron photomicrograph that oil field sludge ground ornamental slab for paving the floor solidified 28 days, comparison diagram 2, Fig. 3 can find, Fig. 2 structure is looser, glued knot mineral are less between each solid particulate, only are the hydrated product-hydrated calcium silicate of cement generally; Fig. 3 then structure is fine and close, various needle-likes, bar-shaped, flaky cementing material have been full of between each solid particulate, except that a part was the hydrated product of cement, also having most cementing material was mineral such as the ettringite that forms of some the composition actings in conjunction in solidifying agent, cement and the oil field sludge, carbon calcium aluminate, drated calcium aluminate in these cementing materials.
The research of 2 curing mechanisms
As can be known whole oil filed sludge curing process, playing the two portions that mainly contain of solidification from above X-ray diffraction analysis and Electronic Micro-Analysis, at first is the C in the cement
3S, C
2Mineral generation hydrations such as S form hydrated calcium silicate, and its effect can be used formula (5-1) expression:
Next is lime carbonate in the oil field sludge and the C in the cement
3The A reaction generates acicular carbon calcium aluminate (C
3A3CaCO
332H
2O and C
3ACaCO
312H
2O) its effect can be represented with formula 5-2 and 5-3:
Be that actings in conjunction such as aluminum ion, sulfate ion, calcium ion in solidifying agent, cement and the oil field sludge form ettringite at last.
1), the effect of cement
Cement and waste mud add water and mix and stir back generation hydration reaction in cement-hydrate, and to intensity contribution maximum mainly is the hydrated calcium silicate (CSH) with cementation.Studies show that of chemistry of cement:
(1) hydrated calcium silicate that generates in liquid phase (CSH) has roughly certain Ca/S ratio, is about Ca/Si=1.2.The thermodynamic balance equations formula that CSH generates can be write:
(2) the original Ca/Si of liquid phase, OH
-The kind of the ratios affect hydrated product of/Si is as the original Ca/Si of liquid phase, OH
-When/Si was smaller, in hydrated product, the silicic acid gel of no cementation occupied larger proportion along with the original Ca/Si of solution, OH
-The increase of/Si ratio, the ratio reinforcement of CSH in the hydrated product.Learn liquid phase Ca from the thermodynamic balance equations formula
2+, OH
-, minimizing, Ca in the cement-earth pore water (OH)
2Under the undersaturated situation, be the absorption that reaches capacity, mud will absorb in a large number and generate the necessary Ca of CSH
2+, OH
-, cause the growing amount of CSH to reduce.In the cement-earth forming process, mud is to OH
-, Ca
2+Absorption and hydrated cementitious discharge Ca (OH)
2Process carry out simultaneously.Early stage mud is to OH
-, Ca
2+A large amount of absorptions may cause the original Ca/Si of cement-earth pore water, OH
-/ Si ratio is low excessively, and the silicic acid gel amount of no cementing power in the hydrated cementitious resultant is increased, and this has further consumed OH
-, Ca
2+, reduced the growing amount of CSH more.Mud is to OH
-, Ca
2+Absorbed dose high more, OH in the cement-earth pore water
-, Ca
2+Concentration is just low more, and the CSH that hydrated cementitious produces in cement-earth is just few more.Owing to contain the higher mineral of calcium contents such as lime, gypsum in the prescription of solidifying agent, make Ca (OH)
2Concentration reaches supersaturation, generates the Ca of CSH gel
2+And OH
-Concentration is enough high, so the good connecting effect of solidifying agent.Active material is scoriaceous in addition mixes in a large number, has substituted part cement, with Ca (OH)
2Go into to carry out the hard fully reaction of coagulating, generated hydrates such as more CSH gel, make its intensity continue development again.
2), the effect of solidifying agent
The oil field sludge sample is faint because of contact between particle, there are a large amount of pore waters and cause the intensity of sample own low, desire to make strength of test block to improve, desirable solidifying agent should have the dual function of cement particle and filling pore, experimental study shows, make solidifying agent with cement merely, the main hydrate of cement is a hydrated calcium silicate, and CSH has stronger cementing power, loose examination body pearl glue can be formed integral body, but the efficient of its filling pore is very low, generated the CSH gel between sample particle and the particle, on the hole wall of CSH gel attached to examination body opening crack, it is as a whole that hole wall is tried the glued one-tenth of body, but a little less than the effect of its filling pore, hole still exists in a large number.Though CSH has strengthened intergranular contact, improved solidification intensity to a certain extent; But it fails to remedy the loss of strength that cause in the space in the examination body, makes solidification intensity not ideal enough.Contain gypsum in the solidifying agent, during the solidifying agent aquation except that the reaction identical with cement takes place, gypsum also with contain the aluminium phase reaction, produce a large amount of ettringite.Ettringite is the crystal of needle prick shape under certain condition, and in crystal formation process, its solid volume can increase about 120%.Ettringite exists, and because of its solid volume expands, has filled the part hole on the one hand, and examination body void content is reduced; Its bigger needle prick shape crystal on the other hand, in hole, generate, intersect mutually and form space structure with hydrated calcium silicate, be filled in the hole with higher efficient support, make the pore size distribution refinement of cured body, about studies show that of porous material: the intensity of material and its void content are negative correlativing relation, and void content intensity more at least is high more.When void content is identical, mean pore size is more little, the existence of the high more ettringite of intensity has reduced the void content in the solidified earth, reduced the mean pore size in the cured body, hole between particle and particle is to couple together by the CSH gel, add fashionable than no solidifying agent, the generation of CSH glue greatly increases strength of test block, solidifying agent has not only generated a large amount of CSH gels, but also generated the stone of a lot of fine aciculars, ettringite intersects at hydrated calcium silicate mutually, and both interact, and make the solidification effect of solidifying agent better.
That by above analysis as can be known, play solidification in oil field sludge building ground ornamental slab for paving the floor is solidifying agent, cement and the coefficient result of Lean oil field sludge.
In sum, floor tile of the present invention has the intensity height, and is pollution-free, reaches the ecological, environmental protective requirement; The pollution and the emission problem of oil field sludge have been solved; It is simple that its production method has technology, advantage easy to make.
(4) description of drawings
Fig. 1 is the x-ray diffraction pattern of floor tile of the present invention
Fig. 2 is the electron photomicrograph that floor tile of the present invention solidified 7 days
Fig. 3 is the electron photomicrograph that floor tile of the present invention solidified 28 days
(5) embodiment
1. embodiment 1
The proportioning raw materials of present embodiment is oil field sludge 30%, river sand 40%, cement 26%, solidifying agent 4%.
Wherein, solidifying agent is to be mixed by following materials of weight proportions:
Sulplo-aluminate: 22% calcium stearate: 5%
Calcium chloride: 20% calcium acetate: 0
Fluorite: 0 gelatin: 5%
Gypsum: 20% lime: 18%
Acrylic resin 0
Core material: 10%
Wherein the core material is to be mixed by following materials of weight proportions:
| CaO | MgO | Fe 2O 3 | SiO 2 | Al 2O 3 | Al 2(SO 4) 4 | Na 2CO 3 | FeSO 4 | MgSO 4 |
| 10 | 8 | 10 | 8 | 10 | 5 | 12 | 19 | 18 |
Production method is:
A) color face uses colored cement and white rubble according to 1: 2.5 ratio thorough mixing, is 0.5 to add water and stir according to water cement ratio, makes slurry; It is thick that slurry is injected in the mould 1-2cm, places half an hour;
B) oil field sludge, river sand, cement, flyash, the solidifying agent with said ratio mixes, and injects in the above-mentioned mould, and it is closely knit to be vibrated to slurry on shaking table, floating matrix surface, the maintenance 1-2 days demoulding.
Maintenance, is tested its 28 days ultimate compression strength, unit weight, water-intake rate, toxicity and radioactivity and is tested according to the test method of relative national standards regulation to of the present invention the ornamental slab for paving the floor in certain length of time, and the result is as follows:
Oil field sludge ground ornamental slab for paving the floor The performance test results
| Performance | Unit weight (g/cm 3) | Water-intake rate (%) | Ultimate compression strength (Mpa) | Toxicity | Radioactivity | ||||
| Soak number of times | CODcr (mg/L) | The PH value | Cr 2+， Pb 2+， Zn 2+ | Radiation dose rate (μ SV/h) | A month radiation dose (μ SV) | ||||
| Test result | 2.15 | 6.25 | 32.5， 28.7 30.6， 31.3 29.5， 29.4 31.2， 32.6 33.0， 27.9 | 1 2 3 4 | 2.36 1.24 0.57 0.42 | 8 7 6 6 | Do not measure | 0.15 | 16.0 |
With reference to the national standard of cement tile, as can be seen from the table, floor tile of the present invention, every technical indicator all is higher than the related standards of country widely.
2. embodiment 2
The matrix material proportioning that increases of present embodiment is oil field sludge 40%, river sand 20%, cement 20%, flyash 19%, solidifying agent 2%.
Wherein, solidifying agent is to be mixed by following materials of weight proportions:
Sulplo-aluminate: 15% calcium stearate: 2%
Calcium chloride: 10% calcium acetate: 15%
Fluorite: 10% gelatin: 9%
Gypsum: 10% lime: 25%
Acrylic resin 4%
Production method is made the ground ornamental slab for paving the floor with embodiment 1.
The performance test results is: ultimate compression strength average out to 22.28, water-intake rate are 7.34%, and unit weight is 1.96g/cm
3Its mechanical property still can satisfy the countries concerned's standard.Other performance is substantially the same manner as Example 1.
3. embodiment 3
The proportioning raw materials of present embodiment is oil field sludge 55%, river sand 20%, cement 18%, solidifying agent 7%.
Wherein, the proportioning of solidifying agent is:
Sulplo-aluminate: 20% calcium stearate: 5%
Calcium chloride: 15% calcium acetate: 10%
Fluorite: 0 gelatin: 5%
Gypsum: 15% lime: 10%
Acrylic resin 0 monoethylene glycol 5%
Core material: 10%
Wherein the core material is made up of following raw materials by weight percent:
| CaO | MgO | Fe 2O 3 | SiO 2 | Al 2O 3 | Al 2(SO 4) 4 | Na 2CO 3 | FeSO 4 | MgSO 4 |
| 5 | 5 | 6 | 15 | 12 | 20 | 20 | 7 | 10 |
Production method makes floor tile with embodiment 1.
The performance test results is: ultimate compression strength average out to 28.28, water-intake rate are 7.24%, and unit weight is 1.96g/cm
3Its mechanical property still can satisfy the countries concerned's standard.Other performance is substantially the same manner as Example 1.
4. embodiment 4
The proportioning raw materials of present embodiment is oil field sludge 30%, river sand 26%, cement 25%, flyash 16%, solidifying agent 3%.
Production method makes floor tile with embodiment 1.
Wherein, the proportioning of solidifying agent is identical with embodiment 3.
The performance test results is: ultimate compression strength average out to 23.28, water-intake rate are 7.30%, and unit weight is 1.96g/cm
3Its mechanical property still can satisfy the countries concerned's standard.Other performance is substantially the same manner as Example 1.
Claims (3)
1. production method of utilizing the floor tile that oil field sludge makes is characterized in that: carries out according to the following steps successively,
It is thick that the color starch adhesive body that a) will mix injects the interior 1-2cm of mould, places half an hour;
B) body material with the following weight proportioning mixes, and injects in the above-mentioned mould, and it is closely knit to be vibrated to slurry on shaking table, floating matrix surface, the maintenance 1-2 days demoulding;
Described body material mainly is made up of following materials of weight proportions:
Oil field sludge: 30-60%
River sand: 15-40%
Cement: 15-30%
Flyash: 0-35%
Solidifying agent: 1-8%
Described solidifying agent contains the following weight proportion raw material:
Sulplo-aluminate: 15%-25% calcium stearate: 0-10% calcium chloride: 0-25%
Calcium acetate: 0-15% fluorite: 0-10% gelatin: 5%-10%
Gypsum: 10%-25% lime: 10%-30% acrylic resin 0-5%.
2. the production method of floor tile according to claim 1, it is characterized in that: the weight proportion of described body material is:
Oil field sludge: 30-50%
River sand: 15-30%
Cement: 15-25%
Flyash: 10-30%
Solidifying agent: 2-6%
Described solidifying agent contains the following weight proportion raw material,
Sulplo-aluminate: 15%-25% calcium stearate: 0-10% calcium chloride: 10%-25%
Calcium acetate: 0-15% fluorite: 4%-10% gelatin: 5%-10%
Gypsum: 10%-25% lime: 10%-30% acrylic resin 0-5%.
3。The production method of floor tile according to claim 1 and 2 is characterized in that: described solidifying agent also adds and accounts for the core material that the solidifying agent weight percent is 8-10%, and wherein the raw material weight proportioning of core material is:
CaO：5-10％ MgO：5-10％ Fe
2O
3：5-10％ SiO
2：6-15％
Al
2O
3：8-15％ Al
2(SO4)
4：2-20％ Na
2CO
3：10-20％ FeSO
4：5-20％
MgSO
4：5-20％。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN031390528A CN1216005C (en) | 2003-09-22 | 2003-09-22 | Floor tile made of oil field sludge and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN031390528A CN1216005C (en) | 2003-09-22 | 2003-09-22 | Floor tile made of oil field sludge and its production process |
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| Publication Number | Publication Date |
|---|---|
| CN1526680A CN1526680A (en) | 2004-09-08 |
| CN1216005C true CN1216005C (en) | 2005-08-24 |
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ID=34286426
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN031390528A Expired - Fee Related CN1216005C (en) | 2003-09-22 | 2003-09-22 | Floor tile made of oil field sludge and its production process |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234882B (en) * | 2008-02-22 | 2010-04-14 | 赵琴 | Floor brick prepared from oil field sludge |
| CN101863068B (en) * | 2010-04-27 | 2012-06-27 | 中国神华能源股份有限公司 | Method for producing autoclaved brick by residue of aluminum-extracted pulverized fuel ash |
| KR101379095B1 (en) * | 2010-04-30 | 2014-03-28 | 제이에프이 스틸 가부시키가이샤 | Method of manufacturing artificial stone |
| CN102555032A (en) * | 2012-03-01 | 2012-07-11 | 扬中市金阳光墙体材料厂 | Method for manufacturing high-strength flame-retardant-type light wall body bricks by utilizing construction waste |
| CN103660425B (en) * | 2013-11-29 | 2016-08-17 | 广东崀玉建材科技股份有限公司 | A kind of preparation method of the colour-fast wood-like sheet of high intensity |
| CN104496383A (en) * | 2014-11-27 | 2015-04-08 | 太仓顺如成建筑材料有限公司 | Humidity-adjustable building material |
| CN106348552A (en) * | 2016-08-31 | 2017-01-25 | 赵卫平 | Industrial sludge solid waste treatment method |
| CN107459249B (en) * | 2017-08-28 | 2021-02-12 | 西安理工大学 | Method for solidifying river sludge |
| CN111439912A (en) * | 2020-03-31 | 2020-07-24 | 肖强 | Environment-friendly treatment process for drilling mud and rock debris in oil field |
-
2003
- 2003-09-22 CN CN031390528A patent/CN1216005C/en not_active Expired - Fee Related
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