CN115477563A - Method for preparing soil conditioner from epoxypropane saponification slag and gold dressing tailings - Google Patents
Method for preparing soil conditioner from epoxypropane saponification slag and gold dressing tailings Download PDFInfo
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- CN115477563A CN115477563A CN202211108423.6A CN202211108423A CN115477563A CN 115477563 A CN115477563 A CN 115477563A CN 202211108423 A CN202211108423 A CN 202211108423A CN 115477563 A CN115477563 A CN 115477563A
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- soil conditioner
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- propylene oxide
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a method for preparing a soil conditioner from propylene oxide saponification slag and gold concentrator tailings, and relates to the technical field of comprehensive utilization of gold concentrator tailings. The invention provides a method for comprehensively utilizing propylene oxide saponification slag and gold concentrator tailings, overcomes the environmental and potential safety hazards of land occupation, dust emission and the like of the propylene oxide saponification slag and the gold concentrator tailings, simultaneously produces a soil conditioner rich in medium and trace elements required by plant growth, has certain economic and social benefits, and realizes the double functions of promoting the resource utilization of industrial solid wastes and the industrial development of the soil conditioner.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of gold dressing tailings, in particular to a method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings.
Background
The proportion of the chlorohydrination method adopted in the production of the propylene oxide accounts for about 60 percent, the saponification slag is industrial waste residue in the production process of the chlorohydrination method of the propylene oxide, 1 to 2 tons of the saponification slag are generated in each 1 ton of the propylene oxide produced by the method, and the saponification slag is mostly stacked in an open-air manner, so that the problems of land occupation, dust emission and the like exist. Similarly, the gold dressing tailings are also industrial wastes, the discharge amount is large, the stacking of the gold dressing tailings and the industrial wastes has double wastes of land and resources, and meanwhile, hidden dangers are caused to the environment and the safety, so that the gold dressing tailings become a key factor for restricting the sustainable development of enterprises.
Therefore, a comprehensive utilization technology of the propylene oxide saponification slag and the gold tailings is needed, the problem of accumulation of the propylene oxide saponification slag and the gold tailings is solved through a reasonable utilization way, waste is changed into valuable, and certain economic benefits and social benefits are generated.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings, which has double effects of promoting the resource utilization of industrial solid wastes and promoting the industrial development of the soil conditioner.
In order to realize the technical purpose, the invention adopts the following scheme:
the method for preparing the soil conditioner by using the propylene oxide saponification slag and the gold tailings comprises the following steps:
s1, carrying out drying, crushing and screening on epoxy propane saponification slag, gold ore tailings, dolomite limestone and phosphogypsum for later use;
s2, uniformly mixing the screened material with a catalyst, and forming;
s3, calcining the formed material;
s4, crushing the calcined and cooled product into powder;
and S5, mixing the powdery material with the granulation disintegrating agent to obtain the soil conditioner, and packaging into bags after granulation molding and drying.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a method for comprehensively utilizing propylene oxide saponification slag and gold concentrator tailings, overcomes the environmental and potential safety hazards of land occupation, dust emission and the like of the propylene oxide saponification slag and the gold concentrator tailings, simultaneously produces a soil conditioner rich in medium and trace elements required by plant growth, has certain economic and social benefits, and realizes the double functions of promoting the resource utilization of industrial solid wastes and the industrial development of the soil conditioner.
The preferred scheme of the invention is as follows:
the water contents of the propylene oxide saponification slag, the gold dressing tailings, the dolomitic limestone and the phosphogypsum in the S1 are all below 5 percent, and the granularity is all smaller than 200 meshes.
The raw materials comprise the following components in percentage by mass:
20-35% of propylene oxide saponification slag
Gold tailings 25% -30%
20-25% of dolomitic limestone
15-30% of phosphogypsum
1% -5% of a catalyst.
The catalyst comprises boron oxide and sodium sulfate, and the mass ratio of the boron oxide to the sodium sulfate is 1.
And in S3, the calcination temperature is 1050-1100 ℃, and the calcination time is 45-90min.
And S4, crushing the blocky product into powder with the particle size of less than 200 meshes by using a Raymond mill.
S5, granulating by using a disk granulator, and controlling the particle size of the granules after molding to be 2-5 mm; drying with a vibration fluidized bed dryer, and controlling water content of the molded granule below 3%.
The granulation disintegrating agent is a commercially available product which is purchased directly, and the main effective component of the granulation disintegrating agent is potassium fulvate.
The granulation disintegrating agent accounts for 5-10% of the total mass of the soil conditioner.
Drawings
FIG. 1 is a process flow diagram provided in an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.
The chlorohydrin method is adopted by Liaoning company to produce the propylene oxide, and the on-site saponification slag is accumulated like a mountain, so that the method becomes an important factor restricting the development of the enterprise and brings environmental protection and safety problems for overcoming the occupied land accumulation of the saponification slag.
A certain Liaoning mine is mined in successive years, a large amount of tailings are accumulated in a tailing pond to become an important factor for restricting the development of enterprises, and the method is adopted to reasonably utilize the tailings in order to overcome the dual waste of land and resources caused by the large amount of accumulated tailings.
Example 1
The invention provides a method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings, which comprises the following steps:
s1, the mass percentages of all the raw materials are as follows: mixing 35% of propylene oxide saponification slag (the main components of which are shown in table 1), 20% of gold separation tailings (the main components of which are shown in table 2), 25% of dolomitic limestone, 15% of phosphogypsum and 5% of catalyst, drying the mixture of the propylene oxide saponification slag, the gold separation tailings, the dolomitic limestone and the phosphogypsum to control the water content to be below 5%, and crushing and screening the mixture to obtain a material with the whole grain size of less than 200 meshes for later use.
TABLE 1 ingredient Table of propylene oxide saponification slag
| Name (R) | CaO | MgO | K 2 O | Cl | SiO 2 |
| Content/% | 53.71 | 8.00 | ＜0.04 | 8.32 | 2.72 |
TABLE 2 composition table of gold ore tailings
| Name (R) | K 2 O | CaO | MgO | SiO 2 | Al 2 O 3 | Fe 2 O 3 | NaO |
| Content/%) | 7.82 | 0.52 | 0.45 | 69.25 | 16.52 | 3.54 | 0.54 |
And S2, uniformly mixing the screened material with a catalyst (the mass ratio of boron oxide to sodium sulfate is 1.
And S3, calcining the formed material in a tunnel kiln at 1050 ℃ for 90min to obtain the primary soil conditioner.
And S4, crushing the product into powder after calcining and cooling, wherein the whole particle size is below 200 meshes.
And S5, mixing the powdery material obtained in the step S4 with a granulation disintegrating agent (the main component is potassium fulvate), wherein the mass of the granulation disintegrating agent accounts for 5-10% of the total mass of the soil conditioner, and packaging the mixture into a bag after granulation molding and drying to prepare the soil conditioner.
The soil conditioner ingredients obtained in example 1 are shown in table 3.
TABLE 3 ingredient Table of soil conditioner of example 1
| Composition (A) | K 2 O（≥5） | CaO（≥25） | MgO（≥7） | SiO 2 （≥20） | Others (43. Ltoreq.) |
| Content/% | 5.57 | 31.62 | 8.95 | 21.76 | 32.10 |
Example 2
The invention provides a method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings, which comprises the following steps:
s1, the mass percentages of all the raw materials are as follows: 20% of propylene oxide saponification slag (same as example 1), 35% of gold separation tailings (same as example 1), 25% of dolomitic limestone, 15% of phosphogypsum and 5% of catalyst, mixing the propylene oxide saponification slag, the gold separation tailings, the dolomitic limestone and the phosphogypsum, drying to control the water content to be below 5%, and crushing and screening to obtain a material with the whole grain size of less than 200 meshes for later use.
And S2, uniformly mixing the screened material with a catalyst (the mass ratio of boron oxide to sodium sulfate is 1.
And S3, calcining the formed material in a tunnel kiln at 1100 ℃ for 60min to produce the primary soil conditioner rich in medium and trace elements required by plant growth.
And S4, crushing the product into powder after calcining and cooling, wherein the whole particle size is below 200 meshes.
And S5, mixing the powdery material with a granulation disintegrating agent (the main component is potassium fulvate), wherein the mass of the granulation disintegrating agent accounts for 5-10% of the total mass of the soil conditioner, and packaging the mixture into a bag after granulation molding and drying to prepare the soil conditioner.
The soil conditioner ingredients obtained in example 2 are shown in table 4.
Table 4 soil conditioner ingredient table of example 2
| Composition (I) | K 2 O | CaO | MgO | SiO 2 | Others |
| Content (citrate soluble)/%) | 5.68 | 27.55 | 8.70 | 25.20 | 32.87 |
The soil conditioner obtained in the example and the traditional fertilizer are combined and respectively applied to the planting of the adjacent panicle rice, the specific conditions and the results are shown in the table 5, and the breeding shape of the rice is shown in the table 6.
Example 3
The invention provides a method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings, which comprises the following steps:
s1, the mass percentages of all the raw materials are as follows: 20% of propylene oxide saponification slag (same as example 1), 35% of gold separation tailings (same as example 1), 25% of dolomitic limestone, 15% of phosphogypsum and 5% of catalyst, mixing the propylene oxide saponification slag, the gold separation tailings, the dolomitic limestone and the phosphogypsum, drying to control the water content to be below 5%, and crushing and screening to obtain a material with the whole grain size of less than 200 meshes for later use.
And S2, uniformly mixing the screened material with a catalyst (the mass ratio of boron oxide to sodium sulfate is 1.
And S3, calcining the formed material in a tunnel kiln at 1050 ℃ for 60min to produce the primary soil conditioner rich in medium and trace elements required by plant growth.
And S4, crushing the product into powder after calcining and cooling, wherein the whole particle size is below 200 meshes.
And S5, mixing the powdery material with a granulation disintegrating agent (the main component is potassium fulvate), wherein the mass of the granulation disintegrating agent accounts for 5-10% of the total mass of the soil conditioner, and packaging the mixture into a bag after granulation molding and drying to prepare the soil conditioner.
The soil conditioner ingredients obtained in example 3 are shown in table 5.
TABLE 5
| Composition (A) | K 2 O | CaO | MgO | SiO 2 | Others are |
| Content (citrate soluble)/%) | 5.12 | 26.53 | 8.70 | 24.41 | 35.24 |
Example 4
The invention provides a method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings, which comprises the following steps:
s1, the mass percentages of all the raw materials are as follows: the method comprises the following steps of mixing 35% of propylene oxide saponification slag (same as that in example 1), 25% of gold separation tailings (same as that in example 1), 20% of dolomite limestone, 15% of phosphogypsum and 5% of catalyst, drying, controlling the water content to be below 5%, crushing and screening to obtain a material with the whole grain size of less than 200 meshes for later use.
And S2, uniformly mixing the screened material with a catalyst (the mass ratio of boron oxide to sodium sulfate is 1.
And S3, calcining the formed material in a tunnel kiln at 1050 ℃ for 60min to produce the primary soil conditioner rich in medium and trace elements required by plant growth.
And S4, crushing the calcined and cooled product into powder with the whole particle size below 200 meshes.
And S5, mixing the powdery material with a granulation disintegrating agent (the main component is potassium fulvate), wherein the mass of the granulation disintegrating agent accounts for 5-10% of the total mass of the soil conditioner, and packaging the mixture into a bag after granulation molding and drying to prepare the soil conditioner.
The soil conditioner ingredients obtained in example 4 are shown in table 6.
TABLE 6
| Composition (A) | K 2 O | CaO | MgO | SiO 2 | Others are |
| Content (citrate soluble)/%) | 5.20 | 30.10 | 7.30 | 22.20 | 35.20 |
The soil conditioners obtained in examples 1 to 4 and traditional fertilizers (urea or various water soluble compound fertilizers) are combined and respectively applied to the planting of adjacent disc-rice plants (wherein the quantity of the traditional fertilizers is fixed, and the soil conditioners are divided into 0, 50 kg/mu and 100 kg/mu), the specific conditions and results are shown in table 7, the rice growth conditions are counted by using the two groups of the dosages and the comparative examples in example 1, and the results are shown in table 8.
TABLE 7 Farmland trial yield statistics
TABLE 8 statistics of rice fertility traits for different protocols
| Soil conditioner dosage (kg/mu) | Height per cm of plant | Ear length/cm | Number of holes (hole/mu) | Ear number per hole/one | The grain number per ear | Number of grains/piece | Fruit set/percent | Thousand grain weight/g |
| 50 | 103.3 | 16.2 | 13882 | 18.8 | 108.3 | 5.7 | 94.7 | 26.4 |
| 100 | 105.4 | 16.4 | 14162 | 19.1 | 109.7 | 3.7 | 96.5 | 26.6 |
| 0 | 102.6 | 16.1 | 13587 | 18.6 | 107.7 | 6.2 | 94.2 | 26.1 |
As can be seen from the data analysis in tables 3, 4, 5 and 6 and tables 7 and 8, the soil conditioner prepared by mixing the saponification slag and the gold tailings improves the maturing rate of rice, thereby achieving the obvious yield increasing effect.
Finally, it is noted that: the above-mentioned list is only the preferred embodiment of the present invention, and naturally those skilled in the art can make modifications and variations to the present invention, which should be considered as the protection scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.
Claims (9)
1. A method for preparing a soil conditioner from propylene oxide saponification slag and gold dressing tailings is characterized by comprising the following steps:
s1, carrying out drying, crushing and screening on epoxy propane saponification slag, gold ore tailings, dolomite limestone and phosphogypsum for later use;
s2, uniformly mixing the screened material with a catalyst, and forming;
s3, calcining the formed material;
s4, crushing the calcined and cooled product into powder;
and S5, mixing the powdery material with the granulation disintegrating agent to obtain the soil conditioner, and packaging into bags after granulation molding and drying.
2. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold separation tailings according to claim 1, wherein the water contents of the propylene oxide saponification slag, the gold separation tailings, the dolomitic limestone and the phosphogypsum in S1 are all below 5%, and the particle sizes are all smaller than 200 meshes.
3. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold tailings as claimed in claim 1, wherein the soil conditioner comprises the following raw materials in percentage by mass:
20-35% of propylene oxide saponification slag
Gold tailings 25% -30%
20-25% of dolomitic limestone
15-30% of phosphogypsum
1% -5% of a catalyst.
4. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold concentrator tailings as claimed in claim 1, wherein the catalyst comprises boron oxide and sodium sulfate, and the mass ratio of the boron oxide to the sodium sulfate is 1.
5. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold tailings as claimed in claim 1, wherein the calcination temperature in S3 is 1050-1100 ℃, and the calcination time is 45-90min.
6. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold concentrator tailings as claimed in claim 1, wherein S4 is implemented by crushing the blocky product into powder with a particle size of less than 200 meshes by using a Raymond mill.
7. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold tailings as claimed in claim 1, wherein a disc granulator is used for granulation in S5, and the particle size of the granules after molding is controlled to be 2-5 mm; drying with a vibration fluidized bed dryer, and controlling water content of the molded granule below 3%.
8. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold tailings as claimed in claim 1, wherein the granulation disintegrating agent comprises potassium fulvate.
9. The method for preparing the soil conditioner from the propylene oxide saponification slag and the gold tailings as claimed in claim 1 or 8, wherein the granulation disintegrating agent accounts for 5-10% of the total mass of the soil conditioner.
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| CN113620724A (en) * | 2021-08-31 | 2021-11-09 | 葫芦岛连石农业有限公司 | Method for producing silicon-calcium-potassium-magnesium fertilizer by utilizing dolomitic limestone |
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