CN101491722B - Control method of ABC dry powder grain size distribution content - Google Patents
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Abstract
The invention discloses a method for controlling the particle size distribution and content of an ABC powder extinguishing agent, which comprises the following steps of: (1) firstly, crushing diammonium phosphate with an LF concealed and stepped super micro mill and controlling the 'particle size distribution' of the diammonium phosphate; secondly, controlling the 'particle size distribution' of other materials in 0.125 millimeter, 0.063 millimeter and 0.040 millimeter sieves and an underpan; and finally, controlling the 'particle size distribution' and 'content' of the product. The ABC powder extinguishing agent prepared by the method can effectively extinguish class A, B and C fires and electric equipment fires, has a class A, B, C fire extinguishing efficiency which is 1 to 3 times of that of the prior ABC powder extinguishing agent, saves raw material cost, improves extinguishing efficiency and can match products made in advanced countries across the world in performance.
Description
Technical field
The present invention relates to the ammonium dihydrogen phosphate (ADP) is the ABC powder extinguishing agent field of main fire extinguishing raw material, is specifically related to a kind of control method of ABC powder extinguishing agent size distribution amount.
Background technology
Along with eliminating with fire foam of halon extinguishing agent used (Convention of Stockholm) with the progressively restriction of PFOS class fluorine surfactant, ABC powder extinguishing agent is because its production technology is simple, raw material is easy to get, extinguishing property is good, applied range, and development is very fast, is present domestic and international application one of extinguishing chemical the most widely.
GB GB4066.2-2004 and Europe superscript EN615-1994, to " the chemical composition content " and " size distribution " of ABC powder extinguishing agent all with the requirement (GB has increased the regulation to " bottom " quantity 〉=50.0% in " size distribution ") of manufacturer's published value, to the A that goes out, B, C class usefulness has been made different regulations respectively, and product " size distribution " the amount content of component in product " size distribution " of promptly putting out a fire is stipulated, the definite standard of neither one as a reference, the manual operation factor affecting is big in the test of check fire extinguishing effectiveness like this, is unfavorable for that also administration of the prevention and control department exercises supervision to the quality and the fire extinguishing effectiveness of powder extinguishing agent product simultaneously.
At present, the ABC powder extinguishing agent of domestic production, its fire extinguishing component is mostly based on ammonium dihydrogen phosphate (ADP), and ammonium sulfate is auxilliary, and the name of product specification is also decided with the content of ammonium dihydrogen phosphate (ADP).But we find that a lot of products its " chemical composition content " and " size distribution " meet the requirements, and the A that goes out, B, C class fire extinguishing effectiveness do not reach requirement, extinguishing chemical does not play due fire extinguishing effect, can not put out A, B, C class fire and charging equipment fire effectively, increase production cost, and the performance of the extinguishing chemical product of producing with advanced country in the world relatively, still has certain gap.Mainly be because the fire extinguishing component contains quantity not sufficient in " size distribution ", particularly the fire extinguishing component content in " granularity bottom " is few, and the quilt not raw material of fire extinguishing effect occupies.
Summary of the invention
The objective of the invention is above-mentioned deficiency at prior art, a kind of fire extinguishing effectiveness that both can guarantee extinguishing chemical is proposed, can eliminate the manual operation factor of extinguishing chemical in the fire extinguishing effectiveness test again, and help the control method of the ABC powder extinguishing agent size distribution amount that the product quality of administration of the prevention and control department to powder extinguishing agent, particularly fire extinguishing effectiveness exercise supervision.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of control method of ABC powder extinguishing agent size distribution amount, at first should control ammonium dihydrogen phosphate (ADP) and pulverize " size distribution " of material, control " size distribution " of product again, control ammonium dihydrogen phosphate (ADP) " amount " in the product " size distribution " then; Step is as follows: (1) ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " control: adopt the built-in stagewise micronizer of LF type, main frame is infinitely variable speeds, and grader and charger adopt the electromagnetism speed change; Press main frame frequency 30～50Hz, grader rotating speed 100～300r/min, charger rotating speed 800～1200r/min pulverizes ammonium dihydrogen phosphate (ADP), it is 0.0%～5.0% that " size distribution " that makes ammonium dihydrogen phosphate (ADP) pulverize material satisfies in the 0.125mm standard screen; Be 10%～25% in the 0.063mm standard screen; Be 10%～25% in the 0.040mm standard screen; It in the chassis 60.0%～75.0% control range requirement;
(2) other raw material " size distribution " control: other raw material is as the auxiliary inserts of product, the size distribution of testing all kinds of other raw materials respectively earlier before configuring product meets the following requirements " size distribution " of all kinds of other raw materials: to be 0%～18% in the 0.125mm standard screen; Be 10%～35% in the 0.063mm standard screen; Be 10%～35% in the 0.040mm standard screen; It in the chassis 26%～80% control range;
(3) control of product " size distribution " and Granularity Distribution " amount ": pulverize at known ammonium dihydrogen phosphate (ADP) under the prerequisite of material " size distribution " and other raw material " size distribution ", press ammonium dihydrogen phosphate (ADP) again and pulverize the producting proportion combination of material and other raw material, the ammonium dihydrogen phosphate (ADP) of the standard screen correspondence of every kind of specification that step (1) is obtained is pulverized the percentage by weight addition that corresponding other raw material " size distribution " of standard screen that material " size distribution " multiply by this specification that percentage by weight that ammonium dihydrogen phosphate (ADP) in the product pulverizes material and step (2) obtain multiply by other raw material in the product and is product " size distribution "; Make product " size distribution " control range satisfy: to be 0.0%～10.0% in the 0.125mm standard screen; Be 10.0%～25.0% in the 0.063mm standard screen; Be 10.0%～25.0% in the 0.040mm standard screen; Be 50.0%～65.0% in the chassis;
The ammonium dihydrogen phosphate (ADP) of the standard screen correspondence of every kind of specification that step (1) is obtained is pulverized material " size distribution " and be multiply by percentage by weight that ammonium dihydrogen phosphate (ADP) in the product pulverizes material and promptly get Granularity Distribution " amount " divided by the product " size distribution " of the standard screen correspondence of this kind specification more then, just " amount " of the middle ammonium dihydrogen phosphate (ADP) of product " size distribution "; Because of not directly control of negligible amounts in the 0.125mm sieve, be incorporated into control together in the 0.063mm sieve, make Granularity Distribution " amount " control range satisfy:
40%ABC powder extinguishing agent Granularity Distribution " amount " is 15.0%～30.0% in 0.125mm～0.063mm standard screen, is 35.0%～50.0% in the 0.040mm standard screen, is 45.0%～60.0% in the chassis;
70%ABC powder extinguishing agent Granularity Distribution " amount " is 40.0%～60.0% in 0.125mm～0.063mm standard screen, is 60.0%～80.0% in the 0.040mm standard screen, is 70.0%～80.0% in the chassis;
90%ABC powder extinguishing agent Granularity Distribution " amount " is 80.0%～90.0% in 0.125～0.063mm standard screen; Be 85.0%～95.0% in the 0.040mm standard screen; Be 90.0%～98.0% in the chassis.
" size distribution " of all kinds of other raw materials meets the following requirements in the above-mentioned steps (2): be 5%～17% in the 0.125mm standard screen; Be 15%～33% in the 0.063mm standard screen; Be 15%～33% in the 0.040mm standard screen; Be 27%～70% in the chassis.
Ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " in the above-mentioned steps (1), product " size distribution " method of testing in other raw material " size distribution " and the step (3) in the step (2): by GB GB4066.1-2004 the 5.7th clause method.
Granularity Distribution " amount " method of testing in the above-mentioned steps (3): test out product " size distribution " value by GB GB4066.1-2004 the 5.7th clause method earlier, then by GB GB4066.2-2004 appendix A method, test ammonium dihydrogen phosphate (ADP) content in 0.063mm, 0.040mm sieve and the chassis respectively, the result of mensuration is " amount " of ammonium dihydrogen phosphate (ADP) in the product " size distribution ".
Advantage of the present invention and beneficial effect:
1. the product that adopts control method of the present invention to make, both can guarantee the fire extinguishing effectiveness of extinguishing chemical, can eliminate the manual operation factor of extinguishing chemical in the fire extinguishing effectiveness test again, and help administration of the prevention and control department, by measuring the method for " ammonium dihydrogen phosphate (ADP) amount " in the Granularity Distribution, fire extinguishing effectiveness to the powder extinguishing agent product exercises supervision, and need not do the extinguishing property test.
2. the ABC powder extinguishing agent through the inventive method preparation can not only put out A, B, C class fire and charging equipment fire effectively, and the common ABC powder extinguishing agent of the efficiency ratio that puts out A, B, C class fire improves 1～3 times, saved cost of material, improved fire extinguishing effectiveness, properties of product can match in excellence or beauty with advanced country in the world.
The specific embodiment
Below by embodiment the present invention is done to describe in further detail, but the present invention not only is confined to following examples.
Embodiment 1
The 40%ABC powder extinguishing agent, the control method of Granularity Distribution " amount "
(1) ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " control: adopt built-in stagewise micronizer, main frame is infinitely variable speeds, grader and charger adopt the electromagnetism speed change, press main frame frequency 50Hz, grader rotating speed 200r/min, charger rotating speed 1000r/min, at first pulverize the ammonium dihydrogen phosphate (ADP) raw material, by GB GB4066.1-2004 the 5.7th clause method, the test ammonium dihydrogen phosphate (ADP) is pulverized " size distribution " of material then, and test result is respectively: be 1.3% in the 0.125mm standard screen; In the 0.063mm standard screen 12.0%; In the 0.040mm standard screen 17.1%; In the chassis 69.6%, see Table 1.
(2) other raw material is selected and " size distribution " control: select hydrophobic silica white, mica powder, atlapulgite, talcum powder to be the auxiliary raw material of filling, and press, test hydrophobic silica white, mica powder, atlapulgite, talcous " size distribution " respectively, making comprehensive average " size distribution " that indicates of other raw material is 11.6% in the 0.125mm standard screen; Be 21.4% in the 0.063mm standard screen; Be 17.8% in the 0.040mm standard screen; In the chassis, be 49.2%, see Table 1.
(3) control of product " size distribution " and Granularity Distribution " amount ": the ammonium dihydrogen phosphate (ADP) that step (1) records is pulverized the ammonium dihydrogen phosphate (ADP) of material " size distribution " and " size distribution " other raw material of other raw material that step (2) records, according to 40%ABC powder extinguishing agent product ratio requirement combined ingredient output product, the ammonium dihydrogen phosphate (ADP) of the standard mesh screen correspondence of every kind of specification that step (1) is obtained is pulverized the percentage by weight addition that corresponding other raw material " size distribution " of standard mesh screen that material " size distribution " multiply by this specification that percentage by weight that ammonium dihydrogen phosphate (ADP) in the product pulverizes material and step (2) obtain multiply by other raw material in the product and is product " size distribution ";
Then the ammonium dihydrogen phosphate (ADP) of the standard mesh screen correspondence of every kind of specification that step (1) is obtained pulverize material " size distribution " multiply by percentage by weight that ammonium dihydrogen phosphate (ADP) in the product pulverizes material again divided by the product " size distribution " of the standard mesh screen correspondence of this kind specification Granularity Distribution " amount " (because of directly control of negligible amounts in the 0.125mm sieve, be incorporated into control together in the 0.063mm sieve, i.e. (0.53%+4.92%)/(7.37%+17.55%)=21.87%, embodiment 2～3 is also together), just " amount " of ammonium dihydrogen phosphate (ADP) in the product " size distribution "; See the following form shown in 2:
Above-mentioned GB GB4066.1-2004 the 5.7th clause method: 50g product or raw material (test raw material should first drying handle) be put on the top sieve of 0.125mm, the sieve of 0.063mm, 0.040mm and chassis successively below, cover top cover, bushing screen is fixed on vibrates 10min on the vibrating sieving machine, take off bushing screen, weigh on 0.125mm, 0.063mm, the 0.040mm sieve respectively and the quality of product or raw material in the chassis.
" size distribution " of product or raw material is that product or the mass percent X (%) of raw material in every layer of sieve and chassis are calculated as follows:
X＝m1÷m2×100
M1 in the formula---product or the raw material quality in every layer of sieve and chassis, unit is gram (g);
The sample mass of m2---product or raw material, unit is gram (g);
Fetch yield greater than the mean value of twice result of the test of 98% as measurement result.
Above-mentioned GB GB4066.2-2004 appendix A Granularity Distribution " amount " method of testing: test out product " size distribution " value by GB GB4066.1-2004 the 5.7th clause method earlier, from (0.125mm and 0.063mm merge) 0.040mm sieve and chassis, extract 1g dry powder respectively then, place the 100mL beaker, add 2mL acetone and constantly stirring.After treating the acetone volatilization, add three grades of water of small amount of thermal (60～70) ℃ dissolution filter,, filtrate and cleaning solution all are collected in the 500mL volumetric flask, be diluted to 500mL, shake up, be solution A to be measured with three grades of water with three grades of water washing insoluble matters of about 250mL.
Move in the 400mL beaker with pipette, extract 25mL solution A, add the 10mL salpeter solution, be diluted to 100mL with three grades of water, preheating is closely boiled.Add (40～45) mL quinoline molybdenum lemon ketone reagent, cover surface plate, little 1min of boiling or place boiling water to be incubated to precipitated and separated on closed electric furnace takes out beaker, is cooled to room temperature, and cooling procedure is rotated beaker three to four times.
With in advance (180 ± 2) ℃ down the crucible type filter of dry 45min filter, supernatant liquor has been filtered by elder generation, precipitates with three grades of water washings of about 100mL then, will precipitate with filter to place (180 ± 2) ℃ Constant Temp. Oven inner drying 45min, move in the drier and cool off 45min, weighing.
In the sample ammonium dihydrogen phosphate (ADP) content X (%) just in the product " size distribution " " amount " of ammonium dihydrogen phosphate (ADP) be calculated as follows:
X＝m1×1.0396÷m2×100
M1 in the formula---phosphomolybdic acid quinoline precipitation quality, unit is gram (g);
M2---the quality of materialsing during test, unit is gram (g);
Get mean value that difference is not more than twice result of the test of 0.5% as measurement result.
Embodiment 2～3 " size distribution " and Granularity Distribution " amount " detection method are also together.
Table 1: raw material granularity distributes
| Material name | 0.125mm | 0.063mm | 0.040mm | The chassis |
| Ammonium dihydrogen phosphate (ADP) is pulverized material (%) | 1.3 | 12.0 | 17.1 | 69.6 |
| Other raw material (%) | 11.6 | 21.4 | 17.8 | 49.2 |
Table 2: product theory " size distribution " and theoretical size distribution " amount "
Illustrate: the result of product " size distribution " and Granularity Distribution " amount " theoretical value and actual production product has inevitable difference, should be as the criterion with the reality test, as follows, but control reference as actual production, effectively controlled final products size distribution amount, thereby produce the better extinguishing chemical of fire extinguishing effectiveness.
Embodiment 2
The 70%ABC powder extinguishing agent, the control method of Granularity Distribution " amount "
(1) ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " control: adopt built-in stagewise micronizer, main frame is infinitely variable speeds, grader and charger adopt the electromagnetism speed change, press main frame frequency 48Hz, grader rotating speed 250r/min, charger rotating speed 900r/min, at first pulverize the ammonium dihydrogen phosphate (ADP) raw material, by GB GB4066.1-2004 the 5.7th clause method, the test ammonium dihydrogen phosphate (ADP) is pulverized material granularity and is distributed then; Test result is respectively: be 1.0% in the 0.125mm standard screen; In the 0.063mm standard screen 17.5%; In the 0.040mm standard screen 18.0%; In the chassis 63.5%, see Table 3.
(2) other raw material is selected and size distribution control: select hydrophobic silica white, mica powder, atlapulgite, talcum powder to be the auxiliary raw material of filling, and, test hydrophobic silica white, mica powder, atlapulgite, talcous " size distribution " respectively by GB GB4066.1-2004 the 5.7th clause method; " size distribution " of other raw material is following to be comprehensive average the sign, promptly is 15.02% in the 0.125mm standard screen; Be 22.77% in the 0.063mm standard screen; Be 19.75% in the 0.040mm standard screen; In the chassis, be 42.46%, see Table 3.
(3) control of product " size distribution " and Granularity Distribution " amount ": control method is with embodiment 1, and concrete data see the following form 4:
Table 3: raw material granularity distributes
| Material name | 0.125mm | 0.063mm | 0.040mm | The chassis |
| Ammonium dihydrogen phosphate (ADP) is pulverized material (%) | 1.0 | 17.5 | 18.0 | 63.5 |
| Other raw material (%) | 15.02 | 22.77 | 19.75 | 42.46 |
Table 4: product theory " size distribution " and theoretical size distribution " amount "
Embodiment 3:
The 90%ABC powder extinguishing agent, the control method of Granularity Distribution " amount "
(1) ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " control: adopt built-in stagewise micronizer, main frame is infinitely variable speeds, grader and charger adopt the electromagnetism speed change, press main frame frequency 45Hz, grader rotating speed 300r/min, charger rotating speed 800r/min, at first pulverize the ammonium dihydrogen phosphate (ADP) raw material, test ammonium dihydrogen phosphate (ADP) then and pulverize the material granularity distribution.Test result is respectively: be 1.6% in the 0.125mm standard screen; In the 0.063mm standard screen 18.4%; At 0.040mm
In the standard screen 20.0%; In the chassis 60.0%, see Table 5.
(2) other raw material is selected and " size distribution " control: select hydrophobic silica white, mica powder, atlapulgite, talcum powder to be the auxiliary raw material of filling.And test hydrophobic silica white, mica powder, atlapulgite, talcous " size distribution " respectively, " size distribution " of other raw material is following to be comprehensive average the sign, promptly is 6.63% in the 0.125mm standard screen; Be 32.12% in the 0.063mm standard screen; Be 32.5% in the 0.040mm standard screen; In the chassis, be 28.75%, see Table 5.
(3) control of product " size distribution " and Granularity Distribution " amount ": control method is with embodiment 1, and concrete data see the following form
Table 5: raw material granularity distributes
| Material name | 0.125mm | 0.063mm | 0.040mm | The chassis |
| Ammonium dihydrogen phosphate (ADP) is pulverized material (%) | 1.6 | 18.4 | 20.0 | 60.0 |
| Other raw material (%) | 6.63 | 32.12 | 32.5 | 28.75 |
Table 6: product theory " size distribution " and theoretical size distribution " amount "
The fire extinguishing effectiveness contrast of final products sees Table 7
Table 7: fire extinguishing effectiveness and domestic and international standard control
Annotate: the 40%ABC that the present invention makes, 70%ABC, 90%ABC powder extinguishing agent, projects such as extinguishing property have been passed through EN615 standard detection (European Union Notified body Belgium peace is general).
As seen from Table 7, the fire extinguishing effectiveness by the ABC powder extinguishing agent of the present invention preparation has increased significantly.
(1) go out category-A fire efficiency ratio EN615 and EN3-7 standard of 40%ABC improves 1 rank;
Go out category-A fire efficiency ratio EN615 and EN3-7 standard of 70%ABC improves 2 ranks;
Go out category-A fire efficiency ratio EN615 and EN3-7 standard of 90%ABC improves 3 ranks.
(2) go out category-B fire efficiency ratio EN615 and EN3-7 standard of 40%ABC improves 1 rank, and fire-fighting area improves 1.3 times;
Go out category-B fire efficiency ratio EN615 and EN3-7 standard of 70%ABC improves 2 ranks, and fire-fighting area improves 1.6 times;
Go out category-B fire efficiency ratio EN615 and EN3-7 standard of 90%ABC improves 3 ranks, and fire-fighting area improves 2.1 times.
(3) the 40%ABC category-B fire efficiency ratio GB4351 standard of going out improves 2 ranks, and fire-fighting area improves 1.6 times;
The 70%ABC category-B fire efficiency ratio GB4351 standard of going out improves 3 ranks, and fire-fighting area improves 2.1 times;
The 90%ABC category-B fire efficiency ratio GB4351 standard of going out improves 4 ranks, and fire-fighting area improves 2.6 times.
70%ABC powder extinguishing agent with the present invention's preparation fills in 2.5 pounds of fire extinguishers, has successfully put out the 10B burning things which may cause a fire disaster in the UL laboratory, 2.5 pounds of ABC dry powder 1.135kg, 10B burning things which may cause a fire disaster food tray area 2.32M
2, improved about 3 times than EN3-7 standard oil disc area, improved about 4 times than GB4351 standard oil disc area.
In sum, ABC powder extinguishing agent through control method preparation of the present invention can not only put out A, B, C class fire and charging equipment fire effectively, and the common ABC powder extinguishing agent of the efficiency ratio that puts out A, B, C class fire improves 1～3 times, therefore, saved cost of material, improved fire extinguishing effectiveness, properties of product can match in excellence or beauty with advanced country in the world.
Claims (1)
1. the control method of an ABC powder extinguishing agent size distribution amount, it is characterized in that: step is as follows:
(1) ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " control: adopt the built-in stagewise micronizer of LF type, main frame is infinitely variable speeds, and grader and charger adopt the electromagnetism speed change; Press main frame frequency 30～50Hz, grader rotating speed 100～300r/min, charger rotating speed 800～1200r/min pulverizes ammonium dihydrogen phosphate (ADP), it is 0.0%～5.0% that " size distribution " that makes ammonium dihydrogen phosphate (ADP) pulverize material satisfies in the 0.125mm standard screen; Be 10%～25% in the 0.063mm standard screen; Be 10%～25% in the 0.040mm standard screen; It in the chassis 60.0%～75.0% control range requirement;
(2) other raw material " size distribution " control: other raw material is as the auxiliary inserts of product, the size distribution of testing all kinds of other raw materials respectively earlier before configuring product meets the following requirements " size distribution " of all kinds of other raw materials: to be 0%～18% in the 0.125mm standard screen; Be 10%～35% in the 0.063mm standard screen; Be 10%～35% in the 0.040mm standard screen; It in the chassis 26%～80% control range;
(3) control of product " size distribution " and Granularity Distribution " amount ": pulverize at known ammonium dihydrogen phosphate (ADP) under the prerequisite of material " size distribution " and other raw material " size distribution ", press ammonium dihydrogen phosphate (ADP) again and pulverize the producting proportion combination of material and other raw material, the ammonium dihydrogen phosphate (ADP) of the standard screen correspondence of every kind of specification that step (1) is obtained is pulverized the percentage by weight addition that corresponding other raw material " size distribution " of standard screen that material " size distribution " multiply by this specification that percentage by weight that ammonium dihydrogen phosphate (ADP) in the product pulverizes material and step (2) obtain multiply by other raw material in the product and is product " size distribution "; Make product " size distribution " control range satisfy: to be 0.0%～10.0% in the 0.125mm standard screen; Be 10.0%～25.0% in the 0.063mm standard screen; Be 10.0%～25.0% in the 0.040mm standard screen; Be 50.0%～65.0% in the chassis;
The ammonium dihydrogen phosphate (ADP) of the standard screen correspondence of every kind of specification that step (1) is obtained is pulverized material " size distribution " and be multiply by percentage by weight that ammonium dihydrogen phosphate (ADP) in the product pulverizes material and promptly get Granularity Distribution " amount " divided by the product " size distribution " of the standard screen correspondence of this kind specification more then, just " amount " of the middle ammonium dihydrogen phosphate (ADP) of product " size distribution "; Because of not directly control of negligible amounts in the 0.125mm sieve, be incorporated into control together in the 0.063mm sieve, make Granularity Distribution " amount " control range satisfy:
40%ABC powder extinguishing agent Granularity Distribution " amount " is 15.0%～30.0% in 0.125mm～0.063mm standard screen, is 35.0%～50.0% in the 0.040mm standard screen, is 45.0%～60.0% in the chassis;
70%ABC powder extinguishing agent Granularity Distribution " amount " is 40.0%～60.0% in 0.125mm～0.063mm standard screen, is 60.0%～80.0% in the 0.040mm standard screen, is 70.0%～80.0% in the chassis;
90%ABC powder extinguishing agent Granularity Distribution " amount " is 80.0%～90.0% in 0.125～0.063mm standard screen; Be 85.0%～95.0% in the 0.040mm standard screen; Be 90.0%～98.0% in the chassis;
Ammonium dihydrogen phosphate (ADP) is pulverized material " size distribution " in the described step (1), the method for testing of product " size distribution " in other raw material " size distribution " and the step (3) in the step (2): by GB GB4066.1-2004 the 5.7th clause method;
The method of testing of Granularity Distribution " amount " in the described step (3): test out product " size distribution " value by GB GB4066.1-2004 the 5.7th clause method earlier, then by GB GB4066.2-2004 appendix A method, test ammonium dihydrogen phosphate (ADP) content in 0.063mm, 0.040mm sieve and the chassis respectively, the result of mensuration is " amount " of ammonium dihydrogen phosphate (ADP) in the product " size distribution ".
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| CN102374985A (en) * | 2010-08-10 | 2012-03-14 | 北京北机机电工业有限责任公司 | Method for determining ammonium biphosphate content of 50% of ABC dry powder extinguishant through spectrophotometry |
| CN102654444B (en) * | 2012-04-26 | 2014-01-01 | 中冶南方工程技术有限公司 | Method for measuring pulverized coal granularity of blast furnace coal-injection medium-speed milling system |
| CN104645540B (en) * | 2015-02-11 | 2018-04-20 | 宁波能林消防器材有限公司 | The control method of ABC powder extinguishing agent bulk density |
| CN104645541B (en) * | 2015-02-11 | 2018-09-25 | 宁波能林消防器材有限公司 | A kind of ABC powder extinguishing agent |
| CN106178376B (en) * | 2016-07-13 | 2019-04-12 | 贵州川恒化工股份有限公司 | A kind of efficient ABC powder extinguishing agent |
| CN110025917A (en) * | 2019-05-23 | 2019-07-19 | 南京高昇消防药剂有限公司 | A kind of process modification method promoting dry powder fire extinguishing agent fire extinguishing effectiveness |
| CN113546360B (en) * | 2021-07-27 | 2022-09-13 | 宁波能林消防器材有限公司 | Ammonium phosphate dry powder extinguishing agent and preparation method thereof |
| CN114377337A (en) * | 2021-12-20 | 2022-04-22 | 佛山市南海铧杨消防器材有限公司 | Production system and production method of ammonium phosphate dry powder extinguishing agent |
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| CN101491722A (en) | 2009-07-29 |
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