CN112500101A - Anti-cracking drilling fluid rock debris curing agent and using method thereof - Google Patents
Anti-cracking drilling fluid rock debris curing agent and using method thereof Download PDFInfo
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- CN112500101A CN112500101A CN202011157939.0A CN202011157939A CN112500101A CN 112500101 A CN112500101 A CN 112500101A CN 202011157939 A CN202011157939 A CN 202011157939A CN 112500101 A CN112500101 A CN 112500101A
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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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
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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
- 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
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
-
- 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
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00775—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself
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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
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a rock debris curing agent for anti-cracking drilling fluid, which comprises the following materials: slag powder, desulfurized gypsum, beta-type semi-hydrated gypsum, fly ash, construction waste powder, potassium salt or ammonium salt, an excitant and an organic heavy metal chelating agent. According to the anti-cracking drilling fluid rock debris curing agent and the using method thereof, the curing agent is added into the target rock debris, so that Chemical Oxygen Demand (COD), pH value, chroma and petroleum substances in the rock debris are improved. The curing strength of the rock debris is improved by 6-9 times, and high-cost materials such as cement and the like do not need to be added, so that the rock debris can be prevented from generating cracks after curing, and the method is an environment-friendly curing technology with low cost.
Description
Technical Field
The invention belongs to the field of environment-friendly engineering materials, and particularly belongs to the field of rock debris curing agents.
Background
The curing agent, also known as a hardening agent, a curing agent or a setting agent, is a substance or a mixture for promoting or controlling a curing reaction, wherein the resin curing is a process of irreversible change of thermosetting resin through chemical reactions such as condensation, ring closure, addition or catalysis, and the curing is completed by adding the curing agent. The rock debris curing agent is a curing agent for rock debris of petroleum drilling.
The petroleum drilling fluid is used as the 'blood' of petroleum drilling, the water-based drilling fluid is mainly formed by adding various functional chemical additives into water at present, during the drilling process, stratum rocks adhered with the water-based drilling fluid, various treating agents and other substances are carried out of the ground by the water-based drilling fluid, and solid or semi-solid substances are called water-based rock debris after the solid-liquid separation equipment for drilling. The untreated water-based rock debris is characterized in that COD, chloride ions and pH in the leaching solution are taken as main pollutants, a small amount of petroleum and heavy metals are excessive, and if the untreated water-based rock debris is directly discharged, certain influence is caused on the environment.
The curing agent is used for curing the water-based rock debris, so that heavy metals in the water-based rock debris can be stabilized, COD (chemical oxygen demand), chromaticity and chloride ions of the leachate are reduced, and the pH value is adjusted, thereby being a mature water-based rock debris harmless treatment technology at present. The prior art is directed to a lot of rock debris curing agents, for example, a patent discloses an environment-friendly water-based rock debris curing agent which is formed by combining a liquid component A and a solid component B, wherein the liquid component A is formed by compounding a biosurfactant, a biological enzyme and an organic acid according to a mass ratio of 1:1: 0.05-0.1, and the solid component B is formed by compounding cement and calcium formate according to a mass ratio of 99: 0.5-1; patent CN1150953C discloses a method for curing waste water-based drilling fluid and a curing agent thereof, wherein the curing agent consists of 1-6% of ferric sulfate or ferric trichloride, 0.1-0.6% of bentonite, 1-6% of MgO and 1-10% of 425# cement; patent CN109020462A discloses an environment-friendly silt curing agent, which comprises the following components in parts by weight: 20-40 parts of ordinary silica cement, 4-8 parts of bentonite, 2-5 parts of phosphogypsum, 6-10 parts of sodium silicate, 20-40 parts of quicklime, 1-4 parts of a water reducing agent (any one of carboxylic acid water reducing agents TH-928, TH-925 and TH-904), 3-7 parts of a flocculating agent (mixing polyacrylamide and aluminum sulfate according to a mass ratio of 4-8: 1), 1-4 parts of an auxiliary agent (mixing egg shell powder and pearl powder according to a mass ratio of 2: 4-7), and the auxiliary agent also comprises: 20-35 parts of composite base material and 15-30 parts of composite consolidation component.
However, some of these technologies contain a lot of inorganic salts, and the water-based rock debris contains high content of the inorganic salts, which may cause the salt content of surface water and underground water to increase, thus affecting the soil quality. Basically, all the technologies have the problems of complex components, complex curing agent preparation procedures and high cost caused by the adopted raw materials. The existing solidification mainly adopts cement series, cement additives (sodium chloride, potassium chloride, magnesium chloride and other electrolytes), lime, cement, lime + volcanic ash, lime + fly ash, lime + slag, lime + fly ash + slag and the like, and has higher cost.
In addition, because the drilling fluid is added with a large amount of bentonite for improving the viscosity, the drilling cuttings also contain a large amount of bentonite, water is easily absorbed during curing, the volume is severely shrunk due to solidification, more cracks are generated, the cutting curing effect is poor, and the compressive strength is low. In addition, the organic matters and heavy metals in the rock debris can not be fully coated by the cementing materials due to more cracks, the rock debris in the cracks is easy to contact with external water, and the organic matters and the heavy metals in the rock debris are easy to seep out along with the water, so that the environmental pollution is caused.
Disclosure of Invention
Aiming at the technical problems of complex components, complex curing agent preparation procedures and environmental pollution caused by high cost due to the adoption of raw materials and the seepage of organic matters and heavy metals in rock debris along with water, the invention provides a rock debris curing agent for a cracking-proof drilling fluid, which changes building waste into valuable by replacing cement with high cost, solves the problems of the treatment of the building waste and the cost of the rock debris curing agent, solves the problem that a solid rock debris curing agent is easy to crack through a specific formula, solves the problem that organic matters and heavy metals of the rock debris curing agent are difficult to remove by introducing an organic heavy metal chelating agent, and has wide applicability in the field of soil curing.
The invention provides a rock debris curing agent for anti-cracking drilling fluid, which comprises the following materials: slag powder, desulfurized gypsum, beta-type semi-hydrated gypsum, fly ash, construction waste powder, potassium salt or ammonium salt, an excitant and an organic heavy metal chelating agent.
In the invention, the curing agent contains the following materials in parts by mass: 10-15 parts of slag powder, 7.5-8.5 parts of desulfurized gypsum, 8.5-10 parts of beta-type semi-hydrated gypsum, 35-40 parts of fly ash, 30-40 parts of construction waste powder, 1-1.5 parts of potassium salt or 0.4 part of ammonium salt, and a plurality of exciting agents and organic heavy metal chelating agents.
Preferably, the curing agent in the invention comprises the following materials in parts by mass: 12 parts of slag powder, 8 parts of desulfurized gypsum, 9 parts of beta-type semi-hydrated gypsum, 38 parts of fly ash, 35 parts of construction waste powder and 0.5-1 part of potassium chloride.
More preferably, the construction waste powder of the present invention is 15 to 20 parts of cement fine powder and 15 to 20 parts of red brick fine powder.
More preferably, the curing agent in the invention comprises the following materials in parts by mass: 12 parts of slag powder, 8 parts of desulfurized gypsum, 9 parts of beta-type semi-hydrated gypsum, 38 parts of fly ash, 35 parts of construction waste powder, 0.4 part of ammonium salt, an excitant and a plurality of organic heavy metal chelating agents.
In the invention, the excitant contains 0.5 part of anhydrous sodium sulphate, 0.5 part of quicklime, 0.5 part of sodium hydroxide, 0.5 part of sodium sulfate and 0.5 part of sodium carbonate, and the used organic heavy metal chelating agent is dithiocarbamate with the concentration of 0.1%.
Preferably, the construction waste powder in the invention is 18 parts of cement fine powder and 17 parts of red brick fine powder.
The invention also provides a use method of the anti-cracking drilling fluid rock debris curing agent, which comprises the following steps:
(1) the raw materials are mixed according to the proportion and are fully ground to form the curing agent product with the fineness of about 300 meshes.
(2) And measuring the water content of the target rock debris to be used, and determining the optimal water adding amount according to the water content of the rock debris.
(3) And (2) adding water into the curing agent product obtained in the step (1), mixing the mixture with the rock debris, and then repeatedly kneading and grinding the mixture by using an excavator to ensure that the curing agent is fully contacted with the rock debris.
Furthermore, in the invention, 80-100KG of curing agent is added into each cubic meter in the step (3) and is fully stirred.
Further, in the present invention, the step (1) grinding is performed by ball mill grinding.
In addition, in principle, the drilling fluid is easy to crack when meeting water because a large amount of bentonite is added in order to improve the viscosity of the drilling fluid, and potassium ions or ammonium ions are added in the drilling fluid to inhibit the bentonite from swelling when meeting water and cracking after drying. The electrostatic attraction between the K + ions and the negative charges of the crystal layer is stronger than that of the hydrogen bond, and water is not easy to enter the crystal layer. In addition, the size of K + ions is just embedded into the lattice-shaped holes of the oxygen ion networks between adjacent crystal layers to play a role in connection, and 12 oxygen ions and K ions are coordinated around the holes. Thus, potassium ions are generally very strong and are not easily exchanged with other ions (e.g., sodium, calcium).
On the other hand, according to the principle of inhibiting the cracking of the soil, only one layer of the surface of the soil is expanded when meeting water during stirring, and the soil is not expanded when meeting water, so that the cracking of the soil is caused.
Desulfurized gypsum (CaSO) added in the invention4.2H2O) volume change is not obvious after adding water, cracks can be prevented from appearing at the time, and the desulfurized gypsum is also used as a single excitant.
Added hemihydrate Gypsum (CaSO)4.、1/2H2O) because the soil is solidified to cause a negative effect of causing cracks due to volume shrinkage, and the hemihydrate gypsum expands in volume after adding water to become desulfurized gypsum (CaSO)4.2H2O), the volume of the soil does not shrink when the soil is solidified, and in the process, the desulfurized gypsum is generated to be used as an activator and can also compensate the volume shrinkage of the solidified soil.
Adding water into fly ash, mineral powder and construction waste powder, adding excitant such as anhydrous sodium sulphate 0.5%, calcium lime 0.5%, sodium hydroxide 0.5%, sodium sulfate 0.5%, sodium carbonate 0.5%, and adding OH of mixed substance slurry-The concentration of the root ions promotes the breakage of SI-O bonds and AL-O bonds, and the reaction rate of 'early hydration' is improved, wherein the slurry does not take cement into reaction. After the curing agent is mixed with soil and added with water, hydration reaction is generated, so that more cementing materials (such as ettringite) are generated in the curing agent and the soil, and more insoluble SiO is generated in the curing agent and the soil compared with the prior art2And AL2O3Continuously dissolving out, and improving the activity.
In addition, the construction waste powder is used cement fine powder and red brick fine powder, and the impurities of the cement fine powder and the red brick fine powder comprise sand and gravel impurities, and the cement fine powder and the red brick fine powder can also generate a cementing material through an excitant after being crushed.
The dithiocarbamate used in the present invention reacts with heavy metals, such as chromium, lead, etc., to form insoluble materials.
The invention has the beneficial effects that:
according to the anti-cracking drilling fluid rock debris curing agent and the using method thereof, the curing agent is added into the target rock debris, so that Chemical Oxygen Demand (COD), pH value, chroma and petroleum substances in the rock debris are improved. The curing strength of the rock debris is improved by 6-9 times, and high-cost materials such as cement and the like do not need to be added, so that the rock debris can be prevented from generating cracks after curing, and the method is an environment-friendly curing technology with low cost.
Detailed Description
The following examples further illustrate the embodiments of the present invention in detail, but the method of the present invention is not limited to the following examples.
The first embodiment is as follows: the invention relates to a rock debris curing agent of anti-cracking drilling fluid
The rock debris curing agent contains slag powder, desulfurized gypsum, beta-type semi-hydrated gypsum, fly ash, construction waste powder, potassium salt or ammonium salt and an excitant. The slag powder is slag such as a melt containing calcium aluminosilicate as a main component, which is obtained when a pig iron is smelted in a blast furnace in an iron works.
Specifically, the formulation used in this example is as follows:
in all of the above formulations, 2kg of dithiocarbamate was also added at a concentration of 0.1%. The used construction waste powder is different in formula I, formula VI, formula VII and formula VIII, and the construction waste powder (1) in the formula I is 18kg of cement fine powder and 17kg of red brick fine powder. In the sixth formula, the construction waste powder (2) is 15kg of cement fine powder and 15kg of red brick fine powder. The seventh formula is that the construction waste powder (3) is 20kg of cement fine powder and 20kg of red brick fine powder. The construction waste powder (4) in the formula VIII is 28kg of cement fine powder and 5kg of red brick fine powder.
Example two: using method of anti-cracking drilling fluid rock debris curing agent
The invention provides a method for using a rock debris curing agent of anti-cracking drilling fluid, which comprises the following steps:
(1) the raw materials are mixed according to the proportion and are fully ground to form the curing agent product with the fineness of about 300 meshes.
(2) And measuring the water content of the target rock debris to be used, and determining the optimal water adding amount according to the water content of the rock debris, so that the rock debris is easy to mix and cannot be solidified too thinly or mixed too dry to be uniform.
(3) And (2) adding water into the curing agent product obtained in the step (1), mixing the mixture with the rock debris, and then repeatedly kneading and grinding the mixture by using an excavator to ensure that the curing agent is fully contacted with the rock debris.
In the invention, 80-100KG of curing agent is added into each cubic meter in the step (3) and fully stirred.
Example three: performance test of rock debris curing agent for anti-cracking drilling fluid
When the performance of the anti-cracking drilling fluid rock debris curing agent is detected, the following detection method is adopted:
(1) chemical Oxygen Demand (COD); measured according to the method of GB/T11914 potassium dichromate method for measuring chemical oxygen demand.
(2) The pH value; the determination is carried out according to the method of national standard GB/T6920 glass electrode method for determining pH value of water quality.
(3) Chroma; the determination is carried out according to the method of national standard GB/T11903 dilution times method for determining water quality chromaticity.
(4) Petroleum; the determination is carried out according to the method of national standard GB/T16488 Infrared photometry for determining water quality of petroleum and animals and plants.
(5) Curing type strength; referring to technical indexes of cement JX-GH.
The detection results are as follows:
TABLE 1 test results of the Properties of the cured product of the examples of the present invention
Table 2 example one of the present invention, the results of testing the properties of the cured product
It can be seen from the formulations one, six, seven and eight of the above examples that the composition of the building powder has an effect on the compressive strength and setting time, and from one and four it can be seen that both the potassium salt and the ammonium salt have a corresponding effect, enabling the final compressive strength and setting time to be as desired, better than the potassium salt. This is probably because it is not known that ammonium salts are disturbed by components already present in the rock debris, whereas potassium salts have been clearly associated with montmorillonite.
Example four: rock debris curing agent performance contrast experiment of anti-cracking drilling fluid
The anti-cracking drilling fluid rock debris curing agent adopting the first formula of the embodiment of the invention, the comparative example 1 (rock debris curing agent sold in the market and sold by Xian Xin Taibai environmental protection engineering Co., Ltd.), the comparative example 2 (formula without building waste powder in the formula of the invention) and the comparative example 2 (formula with cement replacing building waste powder with the same quality in the formula of the invention) are adopted, the adding amount is calibrated according to each curing agent and fully stirred, then an excavator is used for repeatedly kneading and rolling a curing soil mixture to fully contact the curing agent and the rock debris, and finally the actual measured values of cost and curing strength are measured.
In the data, the invention, the comparative examples 2 and the comparative examples 3 have effects on organic matters and heavy metals, mainly because the formulations contain the organic heavy metal chelating agent, but as a result, the components of the formulations have certain influence on the performance of the organic heavy metal chelating agent, particularly, the interference on the organic heavy metal chelating agent is large after the cement is adopted, the purchased commercially available rock debris curing agent has no capability of removing the heavy metals and the organic matters, in addition, in the aspect of curing strength, although the strength of the added cement is better than that of the added construction waste powder, the requirement of the rock debris on the curing strength is not high, and the cost of the cement formulation is far higher than that of the formulation of the invention in terms of cost.
As described above, the present invention can be preferably implemented, and the above-mentioned embodiments only describe the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope determined by the present invention.
Claims (10)
1. The anti-cracking drilling fluid rock debris curing agent is characterized by comprising the following materials: slag powder, desulfurized gypsum, beta-type semi-hydrated gypsum, fly ash, construction waste powder, potassium salt or ammonium salt, an excitant and an organic heavy metal chelating agent.
2. The anti-cracking drilling fluid rock debris curing agent as claimed in claim 1, wherein the curing agent comprises the following materials in parts by mass: 10-15 parts of slag powder, 7.5-8.5 parts of desulfurized gypsum, 8.5-10 parts of beta-type semi-hydrated gypsum, 35-40 parts of fly ash, 30-40 parts of construction waste powder and 1-1.5 parts of potassium salt or 0.4 part of ammonium salt.
3. The anti-cracking drilling fluid rock debris curing agent as claimed in claim 2, wherein the curing agent comprises the following materials in parts by mass: 12 parts of slag powder, 8 parts of desulfurized gypsum, 9 parts of beta-type semi-hydrated gypsum, 38 parts of fly ash, 35 parts of construction waste powder and 0.5-1 part of potassium chloride.
4. The anti-cracking drilling fluid rock debris curing agent as claimed in claim 1, wherein the construction waste powder comprises 15 to 20 parts of cement fine powder and 15 to 20 parts of red brick fine powder.
5. The anti-cracking drilling fluid rock debris curing agent as claimed in claim 2, wherein the curing agent comprises the following materials in parts by mass: 12 parts of slag powder, 8 parts of desulfurized gypsum, 9 parts of beta-type semi-hydrated gypsum, 38 parts of fly ash, 35 parts of construction waste powder and 0.4 part of ammonium salt.
6. The anti-cracking drilling fluid cutting curing agent as claimed in claim 1, wherein the activator comprises 0.5 part of anhydrous sodium sulphate, 0.5 part of quicklime, 0.5 part of sodium hydroxide, 0.5 part of sodium sulfate and 0.5 part of sodium carbonate, and the organic heavy metal chelating agent is dithiocarbamate with the concentration of 0.1%.
7. The anti-cracking drilling fluid rock debris curing agent as claimed in claim 4, wherein the construction waste powder is 18 parts of cement fine powder and 17 parts of red brick fine powder.
8. The method of using a fracture-resistant drilling fluid cuttings curing agent of any of claims 1-7, wherein the method of using comprises the steps of:
(1) fully grinding and mixing the raw materials mixed according to the proportion to form a curing agent product with the fineness of about 300 meshes;
(2) measuring the water content of the target rock debris to be used, and determining the optimal water adding amount according to the water content of the rock debris;
(3) and (2) adding water into the curing agent product obtained in the step (1), mixing the mixture with the rock debris, and then repeatedly kneading and grinding the mixture by using an excavator to ensure that the curing agent is fully contacted with the rock debris.
9. The method for using the anti-cracking drilling fluid rock debris curing agent as claimed in claim 8, wherein in the step (3), 80-100KG of the curing agent is added per cubic meter and is fully stirred.
10. The method for using the anti-cracking drilling fluid rock debris curing agent as claimed in claim 8, wherein the step (1) grinding is performed by ball milling.
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| CN116854450A (en) * | 2023-03-15 | 2023-10-10 | 四川省建材工业科学研究院有限公司 | Activating treatment agent for preparing sintered insulating bricks from water-based drilling cuttings |
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