CN108457689A - A kind of gel foam retardant for preventing sulfide ore spontaneous combustion - Google Patents
A kind of gel foam retardant for preventing sulfide ore spontaneous combustion Download PDFInfo
- Publication number
- CN108457689A CN108457689A CN201711380182.XA CN201711380182A CN108457689A CN 108457689 A CN108457689 A CN 108457689A CN 201711380182 A CN201711380182 A CN 201711380182A CN 108457689 A CN108457689 A CN 108457689A
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- China
- Prior art keywords
- foam
- spontaneous combustion
- retardant
- gel
- sulfide ore
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/06—Fluids used for spraying
Abstract
The present invention is intended to provide a kind of composed structure is simple, coefficient of foaming is high, foam existence time is long, the resistanceization gel foam retardant of good performance for preventing sulfide ore spontaneous combustion.Gel foam retardant of the present invention for preventing sulfide ore spontaneous combustion, it is made of foaming agent, foam stabilizer, gelling agent and crosslinking agent, the mass concentration of the foaming agent is 0.3~0.4%, the mass concentration of foam stabilizer is 0.4~0.55%, the mass concentration of gelling agent is 11~12.3%, the mass concentration of crosslinking agent is 7.5~8.5%.
Description
Technical field
The present invention relates to sulfide ore fire prevention, fire-fighting technique fields, more particularly to are used to prevent sulfide ore certainly
The gel foam retardant technical field of combustion.
Background technology
It is one of the main problem of high-sulfur metal mine safety in production to prevent sulfide ore spontaneous combustion, so far without it is efficient easily
Sulfide ore spontaneous combustion fire prevention, fire extinguishing solution.Main fire prevention, fire-fighting technique measure and method include at present:Watering, Huang
Mud grouting, sprinkling retardant, gel-filled etc..But the above method is used, is come with some shortcomings in actual application, for example,
Although directly watering can be substantially reduced ore temperature, completely cutting off air, slow down ore oxidation spontaneous combustion, moisture is easy to run off, and
Under certain condition, the presence of a large amount of moisture content can also enhance the oxidation and spontaneous combustion speed of sulfide ore；Common retardant is due to oozing
Permeability can be poor, for fanning the air area and the areas Kuang Dui are not easy to spill the effective barrier coating of formation, resistanceization efficiency reduction, wherein having
A little regions are not easy to spray, and can not play Inhibition；For single gel-type retardant, there are gels
The problems such as time is shorter, coefficient of foaming is low, foam existence time is short, there are poor mobile performance, effective coverage range is small etc.
Problem.
Invention content
That the object of the present invention is to provide a kind of composed structures is simple, coefficient of foaming is high, foam existence time long,
The resistanceization gel foam retardant of good performance for preventing sulfide ore spontaneous combustion.
To solve the above problems, the present invention is used to prevent the gel foam retardant of sulfide ore spontaneous combustion by foaming agent, steady
Infusion, gelling agent and crosslinking agent composition, the mass concentration of wherein foaming agent is 0.3~0.4%, the mass concentration of foam stabilizer is 0.4
~0.55%, the mass concentration of gelling agent is 11~12.3%, the mass concentration of crosslinking agent is 7.5~8.5%.
As a further improvement on the present invention, foaming agent is made of SDS and hydrolyzed vegetable protein, and the SDS and hydrolysis are planted
The mass ratio of object albumen is 1：1；Foam stabilizer is made of polyacrylamide and MPS, and the mass ratio of wherein polyacrylamide and MPS is
2：1；Gelling agent is sodium metasilicate；Crosslinking agent is sodium bicarbonate.
As a preference of the present invention, the mass concentration of foaming agent is 0.3%, the mass concentration of foam stabilizer is 0.4%, gelling agent
Mass concentration be 11.9%, the mass concentration of crosslinking agent is 7.9%.
Using above-mentioned technical proposal, after gel foam retardant forms foam under foaming agent effect, gelling agent and crosslinking
Agent crosslinks reaction in uniform foam wall, forms with space multistory network structure and include the gel of bulk gas
Body.Gel foam retardant has a frothy characteristic before gelling, the characteristic with gel after crosslinking, but with single gel or
The property of foam retardant is not quite identical, there is a large amount of uniform point for single gel retardant, in frothy gel
The bubble of cloth；Compared with single water base foam, gel foam retardant has the characteristic of the continuous foreign minister of gel, therefore for being not easy
For spraying region, gel foam retardant has good plugging effect.For single gel retardant, although gel
After retardant is sprayed onto sulphide ore oxidation and spontaneous combustion area, can consolidate to be formed gel the gap of sulfide ore, crack are carried out it is effective
Ground blocks, and forms one of barrier, prevents the sulfur dioxide to be formed to neighboring area diffusion pollution.But the flow of gel, diffusion
Range is smaller, is not easy to hoist, is not easy to reach area at a distance and is diffused accumulation, gel foam retardant can be using foam as stream
Dynamic load body, gel can smoothly be transported to eminence, the region for being not easy to reach farther out.Gel foam retardant has good
Fire extinguishing performance, asphyxiating can be used in foam, inert gas forms a large amount of bubbles, and oxygen barrier, fire retardation, resistanceization are played after sprinkling
Agent plastic is a forming process externally absorbed heat, while a large amount of water is transported to oxidation and spontaneous combustion region and is conducive to play water
The fire extinguishings such as absorbing and cooling temperature, oxygen barrier act on.
In summary the beneficial effects of the invention are as follows：It is of the present invention to be used to prevent the solidifying of sulfide ore spontaneous combustion
Calymma foam retardant technical solution composed structure is simple, coefficient of foaming is high, foam existence time is long, resistanceization is functional
's.
Description of the drawings
Fig. 1 is the resistance rate change curve that 1---3 retardants change over time；
Fig. 2 is the resistance rate change curve that 4---6 retardants change over time；
Fig. 3 is the resistance rate change curve that 7---9 retardants change over time.
Specific implementation mode
The present invention will be further described for following example：
Orthogonal experiment is sketched：The proportioning test of foaming agent and foam stabilizer is carried out first.The method that experiment uses orthogonal design, by ten
Sodium dialkyl sulfate A, plant protein hydrolysate B, polyacrylamide C, silicones polyethers lotion D these four factors are respectively divided into three water
It is flat, i.e. L9（34）, 9 groups of experiments are carried out altogether.Factor and water-glass such as the following table 1, orthogonal test table such as the following table 2.
The factor and water-glass of 1 foaming agent of table and foam stabilizer proportioning test
2 orthogonal test table of table
By the analysis to foam volume and half-life period, it is 0.2g lauryl sodium sulfate, 0.2g vegetation waters to obtain optimal level
Solve albumen, 0.3g polyacrylamides, 0.15g silicones polyethers lotions.Foaming agent and foam stabilizer in the proportioning test of retardant
Optimal level is selected, that is, uses single horizontal intermixture E.
Then the proportioning test of retardant is carried out.Experiment using orthogonal design method, by sodium bicarbonate F, sodium metasilicate G this
Two kinds of factors are respectively divided into three levels, and intermixture E uses single level, i.e. L9（1·32）, 9 groups of experiments are carried out altogether.Factor and water
Flat table such as the following table 3, orthogonal test table such as the following table 4.
The factor and water-glass of 3 retardant proportioning test of table
4 orthogonal test table of table
By the analysis to permeability, attached wall and resistanceization, the optimal proportion for obtaining retardant is：Per in 100ml aqueous solutions
0.2gSDS, 0.2g plant protein hydrolysates, 0.3g polyacrylamides, 0.15gMPS, 10g sodium bicarbonates, 15g sodium metasilicate is added.
From Fig. 1 --- as can be seen that 9 days resistance rates are maintained at 0.6 or more before gel foam retardant in 3, have
Relatively good resistance effect；Since the 10th day, No. 1, No. 2, the resistance rate of No. 3 and No. 6 frothy gel retardants occurred
It is apparent to decline, after the resistance rates of No. 4 gel foam retardants drops to the 17th day, and the small size rising occurred, occur
Fluctuation.No. 5, No. 7, the resistance rate of No. 8 and No. 9 gel foam retardants is constantly in a more stable level, especially
It is No. 5 and No. 8 retardants, resistance rate is always 0.5 or more, resistanceization excellent effect.
As can be seen that the color of the sulfide ore in control group is a large amount of after above-mentioned each group vulcanization sample ore is placed 20 days
Become golden yellow, illustrate that the degree of oxidation of control group sample ore is very high.And compare the mine of sprinkling frothy gel retardant
For sample, control group is much smaller than control group compared to its degree of oxidation.In 9 parts of experiment sample ores, hence it is evident that find out the 1st, 2,3, No. 6 sample ore
Degree of oxidation it is relatively high, oxide on surface is more intensive, and the 4th, 5,7,8, No. 9 sample ore is smaller with respect to degree of oxidation, especially
It is No. 5, No. 7 and No. 8 sample ore, it is basic without there is apparent oxidative phenomena.No. 5, No. 7 and No. 8 bubble of this explanation
The resistance rate of foam gel retardant is higher, and resistanceization effect is preferable.
Indoor test is implemented：0.2g SDS, 0.2g plant protein hydrolysates, 0.3g polypropylene are added in 100mL aqueous solutions
Amide, 0.15g MPS are passed through air after stirring evenly, measure foam volume and half foam life period, are about through measuring foam volume
10 times, half foam life period is about 11 minutes.10g sodium bicarbonates and 15g sodium metasilicate are continuously added, stirring after a certain period of time, measures
Gel time is about 10 minutes.Retardant is added in sulfide ore sample, the resistance rate thirdly week is measured, obtains average resistance
Rate is 85.3%.
Field application is implemented：Carry out field application according to the retardant quality proportioning in laboratory, in Tongling, Anhui Province high-sulfur
Copper mine has carried out application, and prepare sprinkling wagon by underground has carried out multiple spraying operation to high-sulfur stope, after having carried out sprinkling
The sulfur dioxide concentration on high-sulfur mine heap periphery detects, and the temperature change monitoring on mine heap surface passes through one month continuous monitoring number
According to analysis, apparent oxidation and spontaneous combustion phenomenon does not occur for the high-sulfur mine heap after the sprinkling.
Claims (6)
1. a kind of gel foam retardant for preventing sulfide ore spontaneous combustion, it is characterised in that：The gel foam retardant
It is made of foaming agent, foam stabilizer, gelling agent and crosslinking agent, the mass concentration of the foaming agent is the matter of 0.3~0.4%, foam stabilizer
The mass concentration for measuring a concentration of 0.4~0.55%, gelling agent is 11~12.3%, the mass concentration of crosslinking agent is 7.5~8.5%.
2. the gel foam retardant according to claim 1 for preventing sulfide ore spontaneous combustion, which is characterized in that described
Foaming agent is made of SDS and hydrolyzed vegetable protein, and the mass ratio of the SDS and hydrolyzed vegetable protein is 1：1.
3. the gel foam retardant according to claim 1 for preventing sulfide ore spontaneous combustion, which is characterized in that described
Foam stabilizer is made of polyacrylamide and MPS, and the mass ratio of the polyacrylamide and MPS are 2：1.
4. the gel foam retardant according to claim 1 for preventing sulfide ore spontaneous combustion, which is characterized in that described
Gelling agent is sodium metasilicate.
5. the gel foam retardant according to claim 1 for preventing sulfide ore spontaneous combustion, which is characterized in that described
Crosslinking agent is sodium bicarbonate.
6. the gel foam retardant according to claim 1 for preventing sulfide ore spontaneous combustion, it is characterised in that：It is described
The mass concentration of foaming agent is 0.3%, the mass concentration of foam stabilizer is 0.4%, the mass concentration of gelling agent is 11.9%, crosslinking agent
Mass concentration be 7.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380182.XA CN108457689A (en) | 2017-12-20 | 2017-12-20 | A kind of gel foam retardant for preventing sulfide ore spontaneous combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380182.XA CN108457689A (en) | 2017-12-20 | 2017-12-20 | A kind of gel foam retardant for preventing sulfide ore spontaneous combustion |
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| Publication Number | Publication Date |
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| CN108457689A true CN108457689A (en) | 2018-08-28 |
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| CN201711380182.XA Pending CN108457689A (en) | 2017-12-20 | 2017-12-20 | A kind of gel foam retardant for preventing sulfide ore spontaneous combustion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841455A (en) * | 2020-07-06 | 2020-10-30 | 北京科技大学 | Oxidation-resistant gel foam for inhibiting spontaneous combustion of coal |
| CN114263492A (en) * | 2021-12-24 | 2022-04-01 | 中南大学 | Sulfide ore flame-retardant method based on microbial-inhibitor combined action |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1642045A1 (en) * | 1989-03-16 | 1991-04-15 | Восточный научно-исследовательский институт по безопасности работ в горной промышленности | Mixture for preventative treatment of coal pillars |
| CN102153364A (en) * | 2011-05-04 | 2011-08-17 | 上海市建筑科学研究院(集团)有限公司 | Flame retardant heat-insulation foam concrete and preparation method thereof |
| CN103742186B (en) * | 2014-01-21 | 2016-08-17 | 山东科技大学 | A kind of gel foam for coal bed fire hazard treating |
| CN106433139A (en) * | 2016-09-29 | 2017-02-22 | 中国工程物理研究院核物理与化学研究所 | Low-density and high-porosity silicone rubber foam material and preparation method thereof |
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2017
- 2017-12-20 CN CN201711380182.XA patent/CN108457689A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1642045A1 (en) * | 1989-03-16 | 1991-04-15 | Восточный научно-исследовательский институт по безопасности работ в горной промышленности | Mixture for preventative treatment of coal pillars |
| CN102153364A (en) * | 2011-05-04 | 2011-08-17 | 上海市建筑科学研究院(集团)有限公司 | Flame retardant heat-insulation foam concrete and preparation method thereof |
| CN103742186B (en) * | 2014-01-21 | 2016-08-17 | 山东科技大学 | A kind of gel foam for coal bed fire hazard treating |
| CN106433139A (en) * | 2016-09-29 | 2017-02-22 | 中国工程物理研究院核物理与化学研究所 | Low-density and high-porosity silicone rubber foam material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李孜军等: "一种凝胶泡沫及其对硫化矿石自燃的阻化性能研究", 《中国安全科学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841455A (en) * | 2020-07-06 | 2020-10-30 | 北京科技大学 | Oxidation-resistant gel foam for inhibiting spontaneous combustion of coal |
| CN111841455B (en) * | 2020-07-06 | 2022-04-15 | 北京科技大学 | Oxidation-resistant gel foam for inhibiting spontaneous combustion of coal |
| CN114263492A (en) * | 2021-12-24 | 2022-04-01 | 中南大学 | Sulfide ore flame-retardant method based on microbial-inhibitor combined action |
| CN114263492B (en) * | 2021-12-24 | 2022-09-16 | 中南大学 | Sulfide ore flame-retardant method based on microbial-inhibitor combined action |
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