CN112456847A - Method for preparing cement grinding aid by utilizing landfill leachate - Google Patents
Method for preparing cement grinding aid by utilizing landfill leachate Download PDFInfo
- Publication number
- CN112456847A CN112456847A CN202011458421.0A CN202011458421A CN112456847A CN 112456847 A CN112456847 A CN 112456847A CN 202011458421 A CN202011458421 A CN 202011458421A CN 112456847 A CN112456847 A CN 112456847A
- Authority
- CN
- China
- Prior art keywords
- landfill leachate
- stirring
- grinding aid
- parts
- cement grinding
- 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.)
- Pending
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/52—Grinding aids; Additives added during grinding
Abstract
The invention discloses a method for preparing a cement grinding aid by utilizing landfill leachate, which mainly comprises the following steps: firstly, weighing required raw materials for later use; then sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, stirring by using a stirrer at the same time, and adding sodium gluconate for mixing to obtain a sample I; sequentially adding the sodium lignosulphonate and the surfactant into the sample I, and stirring by using a stirrer to obtain a sample II; finally, mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and then standing for 30-45min to obtain a cement grinding aid finished product; the grinding aid provided by the invention is more ideal in grinding aid, the cement compressive strength is higher, and the landfill leachate is used as a raw material, so that the cyclic recycling of resources is promoted, and the environmental pollution is reduced.
Description
Technical Field
The invention relates to the technical field of hazardous waste recycling, in particular to a method for preparing a cement grinding aid by utilizing landfill leachate.
Background
The cement grinding aid is a chemical additive for improving the grinding effect and performance of cement, the common cement grinding aids comprise liquid and powder (solid), and the cement grinding aids can be classified according to chemical structures and can be divided into three types: the cement grinding aid can obviously improve the output per machine hour of cement and the strength of cement at each age, improve the fluidity, greatly reduce the phenomenon of electrostatic adsorption ball inclusion formed in the grinding process, reduce the tendency of secondary coalescence of ultrafine particles formed in the grinding process, obviously improve the fluidity of the cement, improve the grinding effect of a grinding machine and the powder selection efficiency of a powder selecting machine, reduce the grinding energy consumption, ensure that the cement produced by using the grinding aid has lower compaction coalescence tendency, be beneficial to loading and unloading of the cement and reduce the wall hanging phenomenon of a cement warehouse; the landfill leachate is a high-concentration organic or inorganic liquid generated under the biochemical degradation effects of compaction, fermentation and the like in the stacking and landfill processes of the garbage and the seepage effect of precipitation and groundwater, is easily polluted by groundwater and farmlands due to long-term storage or improper disposal, and is listed in the national hazardous waste entry book, but the active substances in the landfill leachate are used for replacing the traditional chemical raw materials to prepare a new cement grinding aid, so that the production cost of the cement grinding aid can be reduced, and the resource utilization of the landfill leachate can be realized; therefore, the invention of the method for preparing the cement grinding aid by utilizing the landfill leachate is particularly important.
At present, the cement grinding aid has an unstable grinding effect, the fineness and the specific surface area of ground cement are relatively poor, the compressive strength of the cement is unsatisfactory, and used raw materials are not beneficial to promoting the recycling of resources.
Disclosure of Invention
In order to overcome the technical problem, the invention provides a method for preparing a cement grinding aid by utilizing landfill leachate.
The purpose of the invention can be realized by the following technical scheme:
a method for preparing a cement grinding aid by utilizing landfill leachate mainly comprises the following steps:
the method comprises the following steps: weighing 30-50 parts of required improved landfill leachate, 10-20 parts of ethanol monoisopropanolamine, 12-15 parts of triethanolamine, 5-10 parts of sodium gluconate, 1-5 parts of surfactant, 12-15 parts of sodium lignosulphonate, 5-15 parts of glycerol, 10-20 parts of salt, 10-20 parts of sugar water and the balance of water for later use;
step two: sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, heating to 45-75 ℃, stirring by using a stirrer, adding sodium gluconate, and mixing for 40-60min to obtain a first sample;
step three: sequentially adding the sodium lignosulfonate and the surfactant into the first sample, controlling the temperature of the reaction kettle to be 35-45 ℃, and stirring by using a stirrer for 20-30 min to obtain a second sample;
step four: and mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and standing for 30-45min to obtain a cement grinding aid finished product.
Further, the stirring speed in the second step is 500-600r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 2-3 times, the time of each forward rotation and reverse rotation is 10-15min, and the interval of the alternate rotation is 1-2 min; the stirring speed in the third step is 300-; and in the fourth step, the stirring speed is 300r/min, and the stirring time is 30 min.
Further, the surfactant is one or more of sodium salt of methanesulfonic acid, polysorbate or fatty glyceride.
Further, the preparation steps of the improved landfill leachate are as follows:
s1: selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result;
s2: according to the PH value detection result, adding a PH regulator into the landfill leachate raw material in the flask for peculiar smell removal and PH regulation, wherein the PH regulation value is 7-13;
s3: pouring the landfill leachate raw material treated by the S2 into a reaction kettle for reaction, wherein the reaction time is 15-35min, the reaction temperature is 70-85 ℃, and standing for 30-45min after the reaction;
s4: and (4) filtering the landfill leachate raw material treated by the S3 by using a filter to obtain the improved landfill leachate.
Further, the filter is specifically one or more of a reverse osmosis filter, a nanofiltration filter, an ultrafiltration filter and a microfiltration filter.
Further, the PH regulator is one or more of lithium oxide, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, aluminum oxide, lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide, and the addition mass of the PH regulator accounts for 1-3% of the mass of the raw material of the landfill leachate.
The invention has the beneficial effects that:
(1) the invention relates to a method for preparing a cement grinding aid by utilizing landfill leachate, which adopts an improved landfill leachate as one of raw materials of the grinding aid, and the preparation steps of the improved landfill leachate are as follows: firstly, selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result; secondly, adding a pH regulator into the landfill leachate raw material in the flask for peculiar smell removal and pH regulation according to a pH value detection result, wherein the pH value is 7-13; thirdly, pouring the landfill leachate raw material treated in the second step into a reaction kettle for reaction, wherein the reaction time is 15-35min, the reaction temperature is 70-85 ℃, and standing for 30-45min after the reaction; and fourthly, filtering the landfill leachate raw material treated by the S3 by using a filter to obtain an improved landfill leachate, and using the improved landfill leachate as the raw material of the grinding aid to facilitate the cyclic recycling of resources and reduce the environmental pollution.
(2) The invention relates to a method for preparing a cement grinding aid by utilizing landfill leachate, which comprises the steps of taking sodium lignosulphonate and one or more of sodium methylsulfonate, polysorbates or fatty acid glycerides as surfactants, simultaneously putting the surfactants into a reaction kettle for reaction, controlling the temperature to be 35-45 ℃, stirring by using a stirrer for 20-30 min, and obtaining a second sample; the second sample enables the cement grinding aid finished product to have stable grinding-assisting effect, the fineness of the ground cement is small, the compressive strength of the cement is high, the specific surface area of the cement is large, and the production quality of the cement is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for preparing a cement grinding aid by utilizing landfill leachate mainly comprises the following steps:
the method comprises the following steps: weighing 30 parts of required improved landfill leachate, 10 parts of ethanol monoisopropanolamine, 12 parts of triethanolamine, 5 parts of sodium gluconate, 2 parts of surfactant, 12 parts of sodium lignosulphonate, 5 parts of glycerol, 10 parts of salt, 10 parts of sugar water and the balance of water for later use;
step two: sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, heating to 45 ℃, stirring by using a stirrer, adding sodium gluconate, and mixing for 40min to obtain a first sample;
step three: sequentially adding the sodium lignosulphonate and the surfactant into the sample I, controlling the temperature of the reaction kettle to be 35 ℃, and stirring by using a stirrer for 20min to obtain a sample II;
step four: and mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and standing for 30min to obtain a cement grinding aid finished product.
In the second step, the stirring speed is 500r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 2 times, the time of each forward rotation and reverse rotation is 10min, and the interval of the alternate rotation is 1 min; the stirring speed is 300r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 2 times, the time of each forward rotation and reverse rotation is 6min, and the interval of the alternate rotation is 1 min; and step four, the stirring speed is 300r/min, and the stirring time is 30 min.
The surfactant is one or more of sodium methylsulfonate, polysorbate or fatty glyceride.
The preparation method of the improved landfill leachate comprises the following steps:
s1: selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result;
s2: according to the PH value detection result, adding a PH regulator into the landfill leachate raw material in the flask for peculiar smell removal and PH regulation, wherein the PH regulation value is 7;
s3: pouring the landfill leachate raw material treated by the S2 into a reaction kettle for reaction, wherein the reaction time is 15min, the reaction temperature is 70 ℃, and standing for 30min after the reaction;
s4: and (4) filtering the landfill leachate raw material treated by the S3 by using a filter to obtain the improved landfill leachate.
The filter is one or more of reverse osmosis filter, nanofiltration filter, ultrafiltration filter and microfiltration filter.
The PH regulator is specifically one or more of lithium oxide, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, aluminum oxide, lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide, and the addition mass of the PH regulator accounts for 1% of the mass of the raw material of the landfill leachate.
Example 2
A method for preparing a cement grinding aid by utilizing landfill leachate mainly comprises the following steps:
the method comprises the following steps: weighing 35 parts of required improved landfill leachate, 10 parts of ethanol monoisopropanolamine, 12 parts of triethanolamine, 5 parts of sodium gluconate, 2 parts of surfactant, 12 parts of sodium lignosulphonate, 5 parts of glycerol, 10 parts of salt, 10 parts of sugar water and the balance of water for later use;
step two: sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, heating to 50 ℃, stirring by using a stirrer, adding sodium gluconate, mixing, and stirring for 45min to obtain a first sample;
step three: sequentially adding the sodium lignosulphonate and the surfactant into the sample I, controlling the temperature of the reaction kettle to be 40 ℃, and stirring by using a stirrer for 25min to obtain a sample II;
step four: and mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and standing for 30-45min to obtain a cement grinding aid finished product.
In the second step, the stirring speed is 500r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 2 times, the time of each forward rotation and reverse rotation is 10min, and the interval of the alternate rotation is 1 min; the stirring speed is 300r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 2 times, the time of each forward rotation and reverse rotation is 6min, and the interval of the alternate rotation is 1 min; and step four, the stirring speed is 300r/min, and the stirring time is 30 min.
The surfactant is one or more of sodium methylsulfonate, polysorbate or fatty glyceride.
The preparation method of the improved landfill leachate comprises the following steps:
s1: selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result;
s2: according to the PH value detection result, adding a PH regulator into the landfill leachate raw material in the flask for peculiar smell removal and PH regulation, wherein the PH regulation value is 9;
s3: pouring the landfill leachate raw material treated by the S2 into a reaction kettle for reaction, wherein the reaction time is 20min, the reaction temperature is 75 ℃, and standing for 35min after the reaction;
s4: and (4) filtering the landfill leachate raw material treated by the S3 by using a filter to obtain the improved landfill leachate.
The filter is one or more of reverse osmosis filter, nanofiltration filter, ultrafiltration filter and microfiltration filter.
The PH regulator is specifically one or more of lithium oxide, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, aluminum oxide, lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide, and the addition mass of the PH regulator accounts for 1% of the mass of the raw material of the landfill leachate.
Example 3
A method for preparing a cement grinding aid by utilizing landfill leachate mainly comprises the following steps:
the method comprises the following steps: weighing 40 parts of required improved landfill leachate, 10 parts of ethanol monoisopropanolamine, 12 parts of triethanolamine, 5 parts of sodium gluconate, 3 parts of surfactant, 12 parts of sodium lignosulphonate, glycerol, salt, sugar water and the balance of water for later use;
step two: sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, heating to 60 ℃, stirring by using a stirrer, adding sodium gluconate, and mixing for 55min to obtain a first sample;
step three: sequentially adding the sodium lignosulphonate and the surfactant into the sample I, controlling the temperature of the reaction kettle to be 40 ℃, and stirring by using a stirrer for 25min to obtain a sample II;
step four: and mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and standing for 40min to obtain a cement grinding aid finished product.
In the second step, the stirring speed is 600r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 3 times, the time of each forward rotation and reverse rotation is 5min, and the interval of the alternate rotation is 2 min; the stirring speed is 400r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are 3 times, the time of each forward rotation and reverse rotation is 8min, and the interval of the alternate rotation is 2 min; and step four, the stirring speed is 300r/min, and the stirring time is 30 min.
The surfactant is one or more of sodium methylsulfonate, polysorbate or fatty glyceride.
The preparation method of the improved landfill leachate comprises the following steps:
s1: selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result;
s2: according to the PH value detection result, adding a PH regulator into the landfill leachate raw material in the flask for peculiar smell removal and PH regulation, wherein the PH regulation value is 11;
s3: pouring the landfill leachate raw material treated by the S2 into a reaction kettle for reaction, wherein the reaction time is 30min, the reaction temperature is 80 ℃, and standing for 40min after the reaction;
s4: and (4) filtering the landfill leachate raw material treated by the S3 by using a filter to obtain the improved landfill leachate.
The filter is one or more of reverse osmosis filter, nanofiltration filter, ultrafiltration filter and microfiltration filter.
The PH regulator is specifically one or more of lithium oxide, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, aluminum oxide, lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide, and the addition mass of the PH regulator accounts for 3% of the mass of the raw material of the landfill leachate.
Example 4
A method for preparing a cement grinding aid by utilizing landfill leachate mainly comprises the following steps:
the method comprises the following steps: weighing 50 parts of required improved landfill leachate, 20 parts of ethanol monoisopropanolamine, 5 parts of triethanolamine, 10 parts of sodium gluconate, 5 parts of surfactant, 155 parts of sodium lignosulphonate, 15 parts of glycerol, 20 parts of salt, 20 parts of sugar water and the balance of water for later use;
step two: sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, heating to 75 ℃, stirring by using a stirrer, adding sodium gluconate, mixing, and stirring for 60min to obtain a first sample;
step three: sequentially adding the sodium lignosulphonate and the surfactant into the sample I, controlling the temperature of the reaction kettle to be 45 ℃, and stirring by using a stirrer for 30min to obtain a sample II;
step four: and mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and standing for 30min to obtain a cement grinding aid finished product.
In the second step, the stirring speed is 600r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 3 times, the time of each forward rotation and reverse rotation is 15min, and the interval of the alternate rotation is 1 min; the stirring speed is 400r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are 3 times, the time of each forward rotation and reverse rotation is 6min, and the interval of the alternate rotation is 2 min; and step four, the stirring speed is 300r/min, and the stirring time is 30 min.
The surfactant is one or more of sodium methylsulfonate, polysorbate or fatty glyceride.
The preparation method of the improved landfill leachate comprises the following steps:
s1: selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result;
s2: according to the PH value detection result, adding a PH regulator into the landfill leachate raw material in the flask for peculiar smell removal and PH regulation, wherein the PH regulation value is 13;
s3: pouring the landfill leachate raw material treated by the S2 into a reaction kettle for reaction, wherein the reaction time is 35min, the reaction temperature is 85 ℃, and standing for 45min after the reaction;
s4: and (4) filtering the landfill leachate raw material treated by the S3 by using a filter to obtain the improved landfill leachate.
The filter is one or more of reverse osmosis filter, nanofiltration filter, ultrafiltration filter and microfiltration filter.
The PH regulator is specifically one or more of lithium oxide, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, aluminum oxide, lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide, and the addition mass of the PH regulator accounts for 3% of the mass of the raw material of the landfill leachate.
Comparative example 5
The comparative example is a cement grinding aid in the market.
The cement grinding aid products prepared in the above examples 1, 2, 3, 4 and 1 are respectively mixed into the cement grinding process, the mixing amount is 0.03%, the performances of all aspects are detected, and the detection results are shown in the following table:
when the mixing amount is less than 0.03%, the grinding aid prepared by the method has better using effect than the grinding aid on the market as can be seen from the examples 1-5 and the comparative example 1 in the upper table, and the cement fineness and the specific surface area of the grinding aid are small and high, and the compressive capacity is high, so that the cement grinding aid prepared by utilizing the landfill leachate has more stable grinding aid effect, the fineness and the specific surface area of the ground cement are more ideal than those of the grinding aid on the market, the compressive strength of the cement is higher, and the landfill leachate is used as a raw material, so that the cyclic reutilization of resources is promoted.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. A method for preparing a cement grinding aid by utilizing landfill leachate is characterized by mainly comprising the following steps:
the method comprises the following steps: weighing 30-50 parts of required improved landfill leachate, 10-20 parts of ethanol monoisopropanolamine, 12-15 parts of triethanolamine, 5-10 parts of sodium gluconate, 1-5 parts of surfactant, 12-15 parts of sodium lignosulphonate, 5-15 parts of glycerol, 10-20 parts of salt, 10-20 parts of sugar water and the balance of water for later use;
step two: sequentially adding the improved landfill leachate, ethanol monoisopropanolamine and triethanolamine into a reaction kettle, adding water into the reaction kettle, heating to 45-75 ℃, stirring by using a stirrer, adding sodium gluconate, and mixing for 40-60min to obtain a first sample;
step three: sequentially adding the sodium lignosulfonate and the surfactant into the first sample, controlling the temperature of the reaction kettle to be 35-45 ℃, and stirring by using a stirrer for 20-30 min to obtain a second sample;
step four: and mixing the sample II with glycerol, stirring by using a stirrer, adding salt and sugar water during stirring, naturally cooling after uniformly stirring, and standing for 30-45min to obtain a cement grinding aid finished product.
2. The method for preparing the cement grinding aid by utilizing the landfill leachate as claimed in claim 1, wherein in the second step, the stirring speed is 500-600r/min, the forward rotation and the reverse rotation of the stirrer are alternately carried out during stirring, the times of the forward rotation and the reverse rotation are both 2-3 times, the time of each forward rotation and the reverse rotation is 10-15min, and the interval of the alternate rotation is 1-2 min; the stirring speed in the third step is 300-; and in the fourth step, the stirring speed is 300r/min, and the stirring time is 30 min.
3. The method for preparing the cement grinding aid by utilizing the landfill leachate according to claim 1, wherein the surfactant is one or more of sodium methylsulfonate, polysorbate and fatty acid glyceride.
4. The method for preparing the cement grinding aid by utilizing the landfill leachate according to claim 1, wherein the preparation steps of the improved landfill leachate are as follows:
s1: selecting a landfill leachate as a raw material, pouring the landfill leachate into a flask, and carrying out pH value detection to obtain a pH value detection result;
s2: according to the PH value detection result, adding a PH regulator into the landfill leachate raw material in the flask for peculiar smell removal and PH regulation, wherein the PH regulation value is 7-13;
s3: pouring the landfill leachate raw material treated by the S2 into a reaction kettle for reaction, wherein the reaction time is 15-35min, the reaction temperature is 70-85 ℃, and standing for 30-45min after the reaction;
s4: and (4) filtering the landfill leachate raw material treated by the S3 by using a filter to obtain the improved landfill leachate.
5. The method for preparing the cement grinding aid by utilizing the landfill leachate according to claim 4, wherein the filter is one or more of a reverse osmosis filter, a nanofiltration filter, an ultrafiltration filter and a microfiltration filter.
6. The method for preparing the cement grinding aid by utilizing the landfill leachate according to claim 4, wherein the pH regulator is one or more of lithium oxide, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, aluminum oxide, lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide, and the addition mass of the pH regulator accounts for 1-3% of the raw material of the landfill leachate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458421.0A CN112456847A (en) | 2020-12-11 | 2020-12-11 | Method for preparing cement grinding aid by utilizing landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458421.0A CN112456847A (en) | 2020-12-11 | 2020-12-11 | Method for preparing cement grinding aid by utilizing landfill leachate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112456847A true CN112456847A (en) | 2021-03-09 |
Family
ID=74803711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011458421.0A Pending CN112456847A (en) | 2020-12-11 | 2020-12-11 | Method for preparing cement grinding aid by utilizing landfill leachate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112456847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115650622A (en) * | 2022-11-10 | 2023-01-31 | 山东众森科技股份有限公司 | Grinding-aid exciting agent for solid waste material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000197876A (en) * | 1999-01-11 | 2000-07-18 | Takenaka Komuten Co Ltd | Aggregate recovering method |
| CN103058577A (en) * | 2013-01-18 | 2013-04-24 | 科之杰新材料集团有限公司 | Liquid compound reinforced type cement grinding aid and preparation method thereof |
| CN109809729A (en) * | 2019-03-28 | 2019-05-28 | 山东众森科技股份有限公司 | A method of cement grinding aid is prepared using landfill leachate |
| CN111875287A (en) * | 2020-08-13 | 2020-11-03 | 衡阳市九州建材有限公司 | Preparation method of composite cement grinding aid |
-
2020
- 2020-12-11 CN CN202011458421.0A patent/CN112456847A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000197876A (en) * | 1999-01-11 | 2000-07-18 | Takenaka Komuten Co Ltd | Aggregate recovering method |
| CN103058577A (en) * | 2013-01-18 | 2013-04-24 | 科之杰新材料集团有限公司 | Liquid compound reinforced type cement grinding aid and preparation method thereof |
| CN109809729A (en) * | 2019-03-28 | 2019-05-28 | 山东众森科技股份有限公司 | A method of cement grinding aid is prepared using landfill leachate |
| CN111875287A (en) * | 2020-08-13 | 2020-11-03 | 衡阳市九州建材有限公司 | Preparation method of composite cement grinding aid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115650622A (en) * | 2022-11-10 | 2023-01-31 | 山东众森科技股份有限公司 | Grinding-aid exciting agent for solid waste material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102731055B (en) | Preparation method for producing lightweight ceramisite from sewage sludge and river sediment through firing | |
| CN105837067B (en) | A kind of red mud and flyash geology polymer material formula and preparation method thereof | |
| CN110142024A (en) | A kind of method and its application preparing N doping multiporous biological charcoal using abandoned biomass | |
| CN104529396B (en) | A kind of method utilizing domestic sludge brickmaking | |
| CN112456847A (en) | Method for preparing cement grinding aid by utilizing landfill leachate | |
| CN104119018A (en) | High-collapse-protection type polycarboxylic water reducer prepared by complex formulation of VC (vitamin C) waste mother liquor | |
| CN107384568A (en) | A kind of recoverying and utilizing method of silicon chip dicing waste mortar | |
| CN102703516B (en) | Alcohol cycle production technology by taking cassava and molasses as raw materials | |
| CN112605097A (en) | Pretreatment method and harmless treatment process of incineration fly ash or sintering ash | |
| CN106277894A (en) | A kind of environmental protection early-strength graphene oxide cement grinding aid and preparation method thereof | |
| CN105858749B (en) | A kind of dedicated sewage-treating agent of livestock and poultry cultivation and preparation method thereof | |
| CN113231005B (en) | Method for preparing porous adsorption material without sintering | |
| CN109437843A (en) | The method for preparing sintering heat-reserving brick using original state wet mud | |
| CN105858751A (en) | Sewage treatment agent special for stone mining and processing and preparation method of sewage treatment agent | |
| CN112759305A (en) | Method for preparing building material by adopting heavy metal exceeding-standard sludge through triple solidification technology | |
| CN108164174A (en) | A kind of preparation method of cement grinding aid | |
| CN106747482A (en) | A kind of method that utilization percolate prepares thinning type ceramic additive | |
| CN106116202A (en) | High-performance water cement grinding aids containing waste vegetable oil and preparation thereof and using method | |
| CN113480250A (en) | Cement archaized brick and preparation method thereof | |
| CN109809729A (en) | A method of cement grinding aid is prepared using landfill leachate | |
| CN205635385U (en) | Non -burning brick system of multiple industrial sludge system environmental protection | |
| CN101096301A (en) | Method for producing cement and concrete intensifier | |
| CN106629933A (en) | Method for treating methylene blue in printing and dyeing wastewater | |
| CN106632583A (en) | Method for extracting walnut crude protein from walnut meat | |
| CN107585981A (en) | A kind of urban sewer sludge curing agent 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |
|
| RJ01 | Rejection of invention patent application after publication |