CN1029736C - Natural sulfide safety explosive for mine and its production process - Google Patents
Natural sulfide safety explosive for mine and its production process Download PDFInfo
- Publication number
- CN1029736C CN1029736C CN 92107110 CN92107110A CN1029736C CN 1029736 C CN1029736 C CN 1029736C CN 92107110 CN92107110 CN 92107110 CN 92107110 A CN92107110 A CN 92107110A CN 1029736 C CN1029736 C CN 1029736C
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- China
- Prior art keywords
- explosive
- safety
- ammonium nitrate
- spontaneous combustion
- inhibitor
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- 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.)
- Expired - Fee Related
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Classifications
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to a safety explosive for spontaneous combustion of sulphide ore and its production process. The present invention features that during the production of explosive, composite inhibitor comprising magnesia, urea and urotropine is added or mixed into bulk explosive to produce safety explosive. The explosive can be safely used for blasting operation of spontaneous combustion sulfide ore deposit, the explosive property of the explosive is close to the index of No. 2 rock explosive, and mechanized explosive charging can be realized.
Description
The present invention relates to explosive and manufacture method thereof.
When common ammoniumnitrate explosives is applied to the blasting operation of spontaneous combustion sulfuration mineral deposit, produce heat-producing chemical reaction, cause explosive spontaneous combustion, self-destruction, thereby caused serious potential safety hazard because the ammonium nitrate in the explosive contacts with sulfide ore.In order to prevent ammonium nitrate and sulfide ore contact reacts,, once taked explosive is carried out the anti-cook-off measure of barrier packaging according to the regulation of the GB6722-86 of the People's Republic of China (PRC) " shotfiring safety rules ".This method has increased Packing Fee on the one hand, has also strengthened the powder stick diameter simultaneously, makes big gun hole manual charging extremely difficult; On the other hand, in case breakage of packing in powder charge process, explosive contacts with ore, still has cook-off danger.For the cook-off problem in the spontaneous combustion sulfuration deposit mining, cook-off reason and anti-from blasting powders was all successively studied by some mines of the U.S., the Soviet Union, Canada, Japan and other countries and research unit.Studies show that and in ammoniumnitrate explosives, add the reaction that materials such as urea, lime carbonate, zinc oxide can suppress ammonium nitrate and sulfide ore respectively separately.Though it is better that separately heavy addition urea suppresses effect, urea can make the decline of ammonium nitrate moisture absorption point, and the easy moisture absorption of explosive has influenced the performance of explosive, the very few inhibition effect that do not reach again of dosage.Test shows independent interpolation lime carbonate, suppresses weak effect, and the roll up power and the sensitivity that also will directly cause ammoniumnitrate explosives of lime carbonate reduce.Japanese Patent 60-103094 proposes to add urea simultaneously in ammonium nitrate finish explosive and lime carbonate can overcome above-mentioned deficiency, but this method is only for being used for powdered ammonium nitrate-fuel oil explosive.
The spontaneous combustion sulphide ores that to the object of the present invention is to provide a kind of mixture with magnesium oxide, urea, urotropine be inhibitor is with safety explosive and manufacturing process, can suppress ammonium nitrate and sulfide mineral reaction in the explosive effectively, can make explosive property again near No. 2 rock explosive indexs.
Spontaneous combustion sulphide ores safety explosive of the present invention is made up of ammonium nitrate, wood powder, tritonal, rosin, paraffin, composite inhibitor, and ammonium nitrate is 80-90%, wood powder 0-4%, tritonal 0-10%, rosin 0.1-4%, paraffin 0.5-4%, composite inhibitor 2-9% by weight percentage.The composite inhibitor that the present invention uses is made up of magnesium oxide, urea, urotropine, and its weight ratio in explosive is respectively 0.5-8%, 0.4-4%, 0.5-8%.As the coated agent of explosive, it is wrapped in the ammonium nitrate granule surface in the present invention for rosin, paraffin, stops the reaction of ammonium nitrate and ore, plays buffer action.Add the composite inhibitor of being made up of magnesium oxide, urea, urotropine in explosive, the three also uses than the effect of using single inhibitor and obviously improves, and can also guarantee that explosive property of the present invention is near No. 2 rock explosive performance index.
Explosive manufacturing process of the present invention is: in the factory that explosive processing condition is arranged, adopt wheel roller heat to grind the manufacturing process of mixing.At first press the explosive component design, ammonium nitrate is dropped in the wheel roller, make and grind temperature rise to 80 ℃, and keep 80 ℃, heat is ground, and adds wood powder then and grinds and mix, and adds rosin, paraffin again, adds tritonal and composite inhibitor at last and mixes and get final product.At the explosion scene that does not have explosive processing condition, desirable No. 2 rock an-tnt explosive finished product 91-98% add composite inhibitor 2-9%, mix the back by the explosive loading machine big gun hole of directly packing into.
Explosive formulation of the present invention, complete processing are easy, and the spontaneous combustion sulphide ores of making is little with safety explosive impact sensitivity and friction sensitivity, can transport safely and store, and uses in the Combustion in High Temperature High Sulfur environment, has good thermostability and chemical stability.Inhibitor of the present invention can be used for powdery or powder shaped explosive charge, can realize loading machineryization.
The invention will be further described to use embodiment and comparative example below.
Embodiment 1: get ammonium nitrate 85%, wood powder 2%, tritonal 9%, rosin 1%, paraffin 0.5%, urotropine 1%, magnesium oxide 1%, urea 0.5% by weight, adopt manufacturing process of the present invention to be processed into safety explosive.The explosion velocity that records this explosive according to standard GB 12436-90, GB12438-90 and GB12440-90 is 3500 meter per seconds, 14.3 millimeters of brisances, 5 centimetres of induced detonation, 349 milliliters of quick-fried power.
Embodiment 2: get ammonium nitrate 82.45%, wood powder 3.88%, tritonal 10.67%, urotropine 1.25%, magnesium oxide 1.25%, urea 0.5% and be processed into safety explosive.Through explosive performance test ing, explosion velocity is 3383 meter per seconds, 14.1 millimeters of brisances, 5 centimetres of induced detonation, 343 milliliters of quick-fried power.
Adopt the safety explosive of prescription of the present invention and explained hereafter all to have cap-sensitivity No. 8.
The safe performance indexes of embodiment 1,2 and common No. 2 rock explosives is compared.With the measured critical reaction temperature of the measuring method of inventor research (promptly causing the minimum temperature that explosive and sulfide ore react) and criticality safety temperature (guaranteeing that promptly explosive contacts not aitiogenic top temperature with sulfide ore), and safety indexs such as initial exothermic temperature that is recorded by differential thermal analyzer and exothermic peak are listed in subordinate list.
Embodiment shows, use the safety explosive of composite inhibitor, its blast performance and safety performance meet practical requirement fully, and explosive contacts with various sulfide ores, guaranteeing that composite inhibitor can reduce greatly than the addition of single inhibitor under the safe handling temperature condition.
Subordinate list
Initial heat release exothermic peak weightless temperature critical reaction criticality safety
The explosive numbering
Temperature (℃) (℃) (℃) temperature (℃) temperature (℃)
Common No. 2 rock explosives 87 100 100 45 40
Embodiment 1 210 216 210 140 135
Embodiment 2 170 186 189 130 125
Claims (3)
1, a kind of spontaneous combustion sulphide ores safety explosive, form by ammonium nitrate, tritonal, wood powder, rosin, paraffin, inhibitor, it is characterized in that ammonium nitrate is 80-90%, wood powder 0-4%, tritonal 0-10%, rosin 0.1-4%, paraffin 0.5-4%, composite inhibitor 2-9% by weight percentage.
2, spontaneous combustion sulphide ores safety explosive according to claim 1 is characterized in that composite inhibitor is made up of magnesium oxide, urea, urotropine, and its weight ratio in explosive is respectively 0.5-8%, 0.4-4%, 0.5-8%.
3, a kind of spontaneous combustion sulphide ores manufacturing process of safety explosive, it is characterized in that ammonium nitrate being dropped in the wheel roller by the prescription of claim 1, grind temperature rise to 80 ℃ and keep 80 ℃, heat is ground, add wood powder then and grind mixed, add rosin, paraffin again, add tritonal and composite inhibitor at last and mix and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107110 CN1029736C (en) | 1992-08-24 | 1992-08-24 | Natural sulfide safety explosive for mine and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107110 CN1029736C (en) | 1992-08-24 | 1992-08-24 | Natural sulfide safety explosive for mine and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1083036A CN1083036A (en) | 1994-03-02 |
| CN1029736C true CN1029736C (en) | 1995-09-13 |
Family
ID=4942671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92107110 Expired - Fee Related CN1029736C (en) | 1992-08-24 | 1992-08-24 | Natural sulfide safety explosive for mine and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029736C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104557349B (en) * | 2015-02-05 | 2017-06-06 | 巴彦淖尔盛安化工有限责任公司 | A kind of sulfur-bearing mine special-purpose emulsifying explosive |
| CN111307007B (en) * | 2020-04-10 | 2022-03-15 | 中钢集团马鞍山矿山研究总院股份有限公司 | Charging structure for inhibiting mine blasting smoke harm |
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1992
- 1992-08-24 CN CN 92107110 patent/CN1029736C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1083036A (en) | 1994-03-02 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |