Composite oxidant type emulsified granular ammonium nitrate fuel oil explosive and preparation method thereof

Abstract

The invention provides a composite oxidant type emulsified granular ammonium nitrate fuel oil explosive and a preparation method thereof, and belongs to the technical field of ammonium nitrate fuel oil explosives, the composite oxidant type emulsified granular ammonium nitrate fuel oil explosive comprises the following components by weight: 80-94% of a composite oxidant type porous granular ammonium nitrate fuel oil explosive, 5-15% of an emulsion matrix, and 1-5% of an additive; the composite oxidant type porous granular ammonium nitrate fuel oil explosive consists of the following components in percentage by weight: 80-90% of porous granular ammonium nitrate, 5-15% of calcium nitrate and 5-6% of liquid diesel oil. According to the composite oxidizing agent type emulsified granular ammonium nitrate fuel oil explosive, safe and environment-friendly porous granular ammonium nitrate and calcium nitrate are used as the composite oxidizing agent, and the porous granular ammonium nitrate is replaced by 5-15% of calcium nitrate, and the composite oxidizing agent is used for replacing a single porous granular ammonium nitrate oxidizing agent; the production cost of the prepared composite oxidant type emulsified granular ammonium nitrate fuel oil explosive product can be reduced under the condition that the performance is not attenuated, meanwhile, toxic gas generated after explosion is reduced, the density of the product is increased, and the working capacity of the product is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of ammonium nitrate oil explosive, and more specifically, relates to a composite oxidant type emulsified granular ammonium nitrate oil explosive and a preparation method thereof. Background Art

[0002] Emulsified granular ammonium oil-fuel oil explosive is a mixed explosive made by mixing an emulsified explosive matrix with porous granular ammonium oil-fuel oil explosive. That is, porous granular ammonium nitrate and light diesel oil are mixed in proportion to form porous granular ammonium oil-fuel oil explosive; porous granular ammonium oil-fuel oil explosive is then mixed with latex matrix in different proportions to form emulsified granular ammonium oil-fuel oil explosives with different properties.

[0003] At present, the domestic production of emulsified granular ammonium nitrate oil explosives uses porous granular ammonium nitrate as a single oxidant in the emulsified granular ammonium nitrate oil explosives, and the reducing agent is mostly composed of diesel and composite oil phase. Ammonium nitrate has good explosion performance, but its price is high, and it produces more toxic gases after explosion, and the density of explosives is low. Summary of the invention

[0004] The object of the present invention is to provide a composite oxidant type emulsified granular ammonium oil-fuel oil explosive and a preparation method thereof, so as to solve the technical problems that the emulsified granular ammonium oil-fuel oil explosive in the prior art is relatively high in price, generates more toxic gas after explosion, and has a low density of explosive.

[0005] To achieve the above object, the first aspect of the present invention provides a composite oxidant type emulsified granular ammonium oil-fuel mixture, which is composed of the following components in weight percentage: 80-94% of composite oxidant type porous granular ammonium oil-fuel mixture, 5-15% of latex matrix, and 1-5% of additives;

[0006] The composite oxidant type porous granular ammonium oil-fuel explosive is composed of the following components in weight percentage: 80-90% of porous granular ammonium nitrate, 5-15% of calcium nitrate and 5-6% of liquid diesel.

[0007] Furthermore, the latex matrix is ​​composed of the following components in weight percentage: 90-95% of water phase and 5-10% of integrated composite oil phase.

[0008] Furthermore, the water phase is composed of the following components in weight percentage: 80-85% ammonium nitrate, 5-10% sodium nitrate, and 10-15% water.

[0009] Furthermore, the integrated composite oil phase is composed of the following components in weight percentage: 64-69% composite wax, 30-35% polyisobutylene succinic acid alcohol amine, and 1-5% engine oil.

[0010] Furthermore, it is composed of the following components in weight percentage: 87% of composite oxidant-type porous granular ammonium oil explosive, 10% of latex matrix, and 3% of additives;

[0011] The composite oxidant type porous granular ammonium oil-fuel explosive is composed of the following components in weight percentage: 85% porous granular ammonium nitrate, 9% calcium nitrate and 6% liquid diesel.

[0012] Furthermore, the additives include one or more of vaseline, talcum powder, polymer emulsifier, and stearic acid.

[0013] A second aspect of the present invention provides a method for preparing a composite oxidant type emulsified granular ammonium nitrate-oil explosive, comprising the following steps:

[0014] Mixing porous granular ammonium nitrate, calcium nitrate and liquid diesel to obtain a semi-finished product;

[0015] The semi-finished product is mixed with a latex matrix and then an additive is added to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0016] Furthermore, during the preparation of the semi-finished product, the rotation speed of the mixing screw is controlled to be 20 to 65 r / min.

[0017] Furthermore, during the mixing process of the semi-finished product, the latex matrix and the additive, the rotation speed of the double-screw mixer is controlled to be 20 to 65 r / min.

[0018] Furthermore, before the semi-finished product, the latex matrix and the additive are mixed, the temperature of the latex matrix is ​​controlled to be 20-45°C.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The composite oxidant type emulsified granular ammonium nitrate oil-fuel oil explosive of the present invention uses safe and environmentally friendly porous granular ammonium nitrate and calcium nitrate as composite oxidants, and replaces the porous granular ammonium nitrate with 5-15% of calcium nitrate. The composite oxidant of the present invention replaces the single porous granular ammonium nitrate oxidant, so that the prepared composite oxidant type emulsified granular ammonium nitrate oil-fuel oil explosive product can reduce the production cost of the product without attenuation of performance, and at the same time reduce the toxic gas generated after the explosion, increase the density of the product, and enhance the working ability of the product.

[0021] The preparation method of the composite oxidant type emulsified granular ammonium oil-fuel explosive of the invention is simple, the process conditions are easy to control and the preparation cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 The present invention provides a flow chart of a method for preparing a composite oxidant type emulsified granular ammonium oil-fired explosive. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0026] The first aspect of the embodiment of the present invention provides a composite oxidant type emulsified granular ammonium oil-fuel oil explosive, which is composed of the following components in weight percentage: 80-94% composite oxidant type porous granular ammonium oil-fuel oil explosive, 5-15% latex matrix, and 1-5% additives.

[0027] The composite oxidant type porous granular ammonium oil-fuel explosive is composed of the following components in weight percentage: 80-90% porous granular ammonium nitrate, 5-15% calcium nitrate, and 5-6% liquid diesel.

[0028] The latex matrix is ​​composed of the following components in weight percentage: 90-95% of a water phase and 5-10% of an integrated composite oil phase.

[0029] The water phase is composed of the following components in weight percentage: 80-85% of ammonium nitrate, 5-10% of sodium nitrate and 10-15% of water.

[0030] The integrated composite oil phase is composed of the following components in weight percentage: 64-69% of composite wax, 30-35% of polyisobutylene succinic acid alcohol amine, and 1-5% of engine oil.

[0031] The additives include one or more of vaseline, talcum powder, polymer emulsifier and stearic acid.

[0032] The second aspect of the embodiment of the present invention provides a method for preparing a composite oxidant type emulsified granular ammonium nitrate oil explosive, and its specific preparation process is as follows: Figure 1 As shown, the following steps are included:

[0033] (1) mixing porous granular ammonium nitrate, calcium nitrate and liquid diesel to obtain a semi-finished product;

[0034] (2) After the semi-finished product is mixed with the latex matrix, an additive is added to obtain a composite oxidant type emulsified granular ammonium oil-fired explosive.

[0035] In the process of preparing the semi-finished product in the above step (1), the porous granular ammonium nitrate and calcium nitrate quantitatively measured by the quantitative screw are transported to the ammonium oil mixing screw, and the liquid diesel measured by the diesel flow meter is sprayed into the ammonium oil mixing screw, and the rotation speed of the mixing screw is controlled to 20 to 65 r / min, and the semi-finished product is obtained after mixing.

[0036] In the above step (2), the aqueous phase components in the latex matrix: ammonium nitrate, sodium nitrate and water are quantitatively mixed by a quantitative screw, filtered, pumped, stored, filtered, pumped and metered to obtain a crude emulsion, and then the metered integrated composite oil phase is added to the crude emulsion, mixed and pumped to obtain a refined emulsion. The refined emulsion is transported to a double-screw mixer through a trolley and a hanging hopper, and the semi-finished product of step (1) is also transported to the double-screw mixer, and after uniform mixing, a composite oxidant type emulsified granular ammonium oil-fuel explosive is obtained. Before the semi-finished product, the latex matrix and the additive are mixed, the temperature of the latex matrix is ​​controlled to be 20-45°C, and during the mixing of the semi-finished product, the latex matrix and the additive, the speed of the double-screw mixer is controlled to be 20-65r / min.

[0037] The composite oxidant type emulsified granular ammonium nitrate oil-fuel oil explosive of the embodiment of the present invention uses safe and environmentally friendly porous granular ammonium nitrate and calcium nitrate as the composite oxidant, and replaces the porous granular ammonium nitrate with 5-15% of calcium nitrate. The present invention uses the composite oxidant to replace the single porous granular ammonium nitrate oxidant, so that the prepared composite oxidant type emulsified granular ammonium nitrate oil-fuel oil explosive product can reduce the production cost of the product without attenuation of performance, while reducing the toxic gas generated after the explosion, increasing the density of the product, and enhancing the working ability of the product.

[0038] The preparation method of the composite oxidant type emulsified granular ammonium oil-fuel mixture of the embodiment of the present invention is simple, the process conditions are easy to control, and the preparation cost is low.

[0039] The composite oxidant type emulsified granular ammonium oil-fuel mixture and its preparation method according to the embodiment of the present invention are illustrated by a plurality of specific embodiments below.

[0040] Example 1

[0041] Embodiment 1 of the present invention provides a composite oxidant type emulsified granular ammonium oil-fired fuel oil and a preparation method thereof:

[0042] According to the formula: 80wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 15wt% of latex matrix, 5wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0043] The composite oxidant-type porous granular ammonium oil-fuel explosive contains 80 wt% of porous granular ammonium nitrate, 14 wt% of calcium nitrate and 6 wt% of liquid diesel.

[0044] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0045] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0046] The additive is talc.

[0047] The porous granular ammonium nitrate and calcium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 20r / min and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and calcium nitrate.

[0048] The temperature of the latex matrix is ​​20°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 20r / min. The latex matrix and the additive are mixed with the semi-finished product to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0049] Example 2

[0050] Embodiment 2 of the present invention provides a composite oxidant type emulsified granular ammonium oil-fired explosive and a preparation method thereof:

[0051] According to the formula: 87wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 10wt% of latex matrix, 3wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0052] The composite oxidant-type porous granular ammonium oil-fuel explosive contains 85wt% of porous granular ammonium nitrate, 9wt% of calcium nitrate and 6wt% of liquid diesel.

[0053] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0054] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0055] The additives are stearic acid and polymer emulsifier, with a mass ratio of 1:1.

[0056] The porous granular ammonium nitrate and calcium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 40r / min and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and calcium nitrate.

[0057] The temperature of the latex matrix is ​​30°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 40r / min. The semi-finished product is stirred and mixed to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0058] Example 3

[0059] Embodiment 3 of the present invention provides a composite oxidant type emulsified granular ammonium oil-fired explosive and a preparation method thereof:

[0060] According to the formula: 94wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 5wt% of latex matrix, 1wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0061] The composite oxidant-type porous granular ammonium oil-fuel explosive contains 90wt% of porous granular ammonium nitrate, 5wt% of calcium nitrate and 5wt% of liquid diesel.

[0062] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0063] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0064] The additive is vaseline.

[0065] The porous granular ammonium nitrate and calcium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 60r / min, and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and calcium nitrate.

[0066] The temperature of the latex matrix is ​​45°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 60r / min. The semi-finished product is stirred and mixed to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0067] Comparative Example 1

[0068] Comparative Example 1 of the present invention provides an emulsified granular ammonium oil-fired fuel and a preparation method thereof:

[0069] According to the formula: 87wt% of porous granular ammonium oil-fuel explosive, 10wt% of latex matrix, 3wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0070] The porous granular ammonium oil-fuel mixture contains 94wt% of porous granular ammonium nitrate and 6wt% of liquid diesel, without adding calcium nitrate.

[0071] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0072] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0073] The additives are stearic acid and polymer emulsifier, with a mass ratio of 1:1.

[0074] The porous granular ammonium nitrate is quantitatively measured by the quantitative screw and then enters the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 40r / min and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate.

[0075] The temperature of the latex matrix is ​​30°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 40r / min. The latex matrix and the additive are mixed with the semi-finished product to obtain the traditional emulsified granular ammonium oil explosive.

[0076] Comparative Example 2

[0077] Comparative Example 2 of the present invention provides a composite oxidant type emulsified granular ammonium oil explosive and a preparation method thereof:

[0078] According to the formula: 87wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 10wt% of latex matrix, 3wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0079] The composite oxidant-type porous granular ammonium nitrate oil explosive contains 91wt% of porous granular ammonium nitrate, 3wt% of calcium nitrate and 6wt% of liquid diesel.

[0080] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0081] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0082] The additives are stearic acid and polymer emulsifier, with a mass ratio of 1:1.

[0083] The porous granular ammonium nitrate and calcium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 40r / min and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and calcium nitrate.

[0084] The temperature of the latex matrix is ​​30°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 40r / min. The semi-finished product is stirred and mixed to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0085] Comparative Example 3

[0086] Comparative Example 3 of the present invention provides a composite oxidant type emulsified granular ammonium oil explosive and a preparation method thereof:

[0087] According to the formula: 87wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 10wt% of latex matrix, 3wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0088] The composite oxidant-type porous granular ammonium oil-fuel explosive contains 76wt% of porous granular ammonium nitrate, 18wt% of calcium nitrate and 6wt% of liquid diesel.

[0089] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0090] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0091] The additives are stearic acid and polymer emulsifier, with a mass ratio of 1:1.

[0092] The porous granular ammonium nitrate and calcium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 40r / min and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and calcium nitrate.

[0093] The temperature of the latex matrix is ​​30°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 40r / min. The semi-finished product is stirred and mixed to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0094] Comparative Example 4

[0095] Comparative Example 4 of the present invention provides a composite oxidant type emulsified granular ammonium oil explosive and a preparation method thereof:

[0096] According to the formula: 87wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 10wt% of latex matrix, 3wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0097] The composite oxidant-type porous granular ammonium oil-fuel explosive contains 85wt% of porous granular ammonium nitrate, 9wt% of sodium nitrate and 6wt% of liquid diesel.

[0098] The aqueous phase consists of the following components in weight percentage: 82% ammonium nitrate, 6% sodium nitrate, and 12% water.

[0099] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0100] The additives are stearic acid and polymer emulsifier, with a mass ratio of 1:1.

[0101] The porous granular ammonium nitrate and sodium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 40r / min and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and sodium nitrate.

[0102] The temperature of the latex matrix is ​​30°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 40r / min. The semi-finished product is stirred and mixed to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0103] Comparative Example 5

[0104] Comparative Example 5 of the present invention provides a composite oxidant type emulsified granular ammonium oil explosive and a preparation method thereof:

[0105] According to the formula: 87wt% of composite oxidant-type porous granular ammonium oil-fuel explosive, 10wt% of latex matrix, 3wt% of additives, the latex matrix contains 92wt% of water phase and 8% of integrated composite oil phase.

[0106] The composite oxidant-type porous granular ammonium oil-fuel explosive contains 85wt% of porous granular ammonium nitrate, 9wt% of magnesium nitrate and 6wt% of liquid diesel.

[0107] The aqueous phase consists of the following weight percentage components: ammonium nitrate 82%, sodium nitrate 6%, water 12%

[0108] The integrated composite oil phase is composed of the following components in weight percentage: 66% of composite wax, 33% of polyisobutylene succinic acid alcohol amine, and 1% of engine oil.

[0109] The additives are stearic acid and polymer emulsifier, with a mass ratio of 1:1.

[0110] The porous granular ammonium nitrate and magnesium nitrate are quantitatively measured by the quantitative screw and then enter the mixing screw; the liquid diesel is measured by the diesel flow meter and then sprayed into the mixing screw. The rotating speed of the mixing screw is 40r / min, and the semi-finished product is obtained by mixing with the porous granular ammonium nitrate and sodium nitrate.

[0111] The temperature of the latex matrix is ​​30°C. The latex matrix and the additive are quantified by the quantitative screw respectively and then enter the double-screw mixer. The rotation speed of the double-screw mixer is 40r / min. The semi-finished product is stirred and mixed to obtain a composite oxidant type emulsified granular ammonium oil explosive.

[0112] The explosives prepared in the above-mentioned embodiments and comparative examples were tested for performance, and the specific test results are shown in Table 1. The specific test method is as follows:

[0113] The density detection method of explosives shall refer to WJ / T 9056 standard, the working capacity detection method of explosives shall refer to GB / T12436 standard, and the detection method of toxic gas content after explosion of explosives shall refer to GB 18098 standard.

[0114] Table 1

[0115]

[0116]

[0117] As can be seen from Table 1 above, compared with using only single ammonium nitrate as an oxidant (Comparative Example 1), the emulsified granular ammonium oil-fired explosives prepared by using ammonium nitrate and calcium nitrate as a composite oxidant in Examples 1-3 of the present invention have significantly improved product density and working performance, and the content of toxic gases generated after the explosion is significantly reduced.

[0118] Embodiment 1-3 of the present invention shows that, compared with Comparative Example 2 and Comparative Example 3, only when the mass percentage content of calcium nitrate in the composite oxidant type porous granular ammonium nitrate oil-fuel mixture is controlled at 5-15%, the prepared emulsified granular ammonium nitrate oil-fuel mixture will have a significant improvement effect on the functional capacity and the content of toxic gases produced after the explosion.

[0119] The results of Examples 1-3 of the present invention compared with Comparative Examples 4 and 5 show that the use of calcium nitrate in the composite oxidant type porous granular ammonium nitrate oil-fuel mixture can improve the product density, working capacity and the toxic gas content produced after the explosion of the prepared emulsified granular ammonium nitrate oil-fuel mixture better than the use of sodium nitrate or magnesium nitrate.

[0120] The embodiment of the present invention changes the formula of the ammonium oil-fuel mixture in the emulsified granular ammonium oil-fuel mixture and uses calcium nitrate to replace part of the porous granular ammonium nitrate, thereby developing a composite oxidant type emulsified granular ammonium oil-fuel mixture with low production cost, less toxic gas after explosion, greater density and stronger working ability.

[0121] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. Composite oxidant type emulsified granular ammonium oil-fuel mixture, characterized in that, The invention is composed of the following components in weight percentage: 80-94% of composite oxidant-type porous granular ammonium oil explosive, 5-15% of latex matrix and 1-5% of additives; The composite oxidant type porous granular ammonium oil-fuel explosive is composed of the following components in weight percentage: 80-90% of porous granular ammonium nitrate, 5-15% of calcium nitrate and 5-6% of liquid diesel.

2. composite oxidant type emulsified granular ammonium oil-fuel mixture as claimed in claim 1, is characterized in that, The latex matrix is ​​composed of the following components in weight percentage: 90-95% of a water phase and 5-10% of an integrated composite oil phase.

3. composite oxidant type emulsified granular ammonium oil-fuel mixture as claimed in claim 2, is characterized in that, The water phase is composed of the following components in weight percentage: 80-85% ammonium nitrate, 5-10% sodium nitrate, and 10-15% water.

4. composite oxidant type emulsified granular ammonium oil-fuel mixture as claimed in claim 2, is characterized in that, The integrated composite oil phase is composed of the following components in weight percentage: 64-69% composite wax, 30-35% polyisobutylene succinic acid alcohol amine, and 1-5% engine oil.

5. composite oxidant type emulsified granular ammonium oil-fuel mixture as claimed in claim 1, is characterized in that, The invention is composed of the following components in percentage by weight: 87% of composite oxidant-type porous granular ammonium oil explosive, 10% of latex matrix and 3% of additives; The composite oxidant type porous granular ammonium oil-fuel explosive is composed of the following components in weight percentage: 85% porous granular ammonium nitrate, 9% calcium nitrate and 6% liquid diesel.

6. composite oxidant type emulsified granular ammonium oil-fuel mixture as claimed in claim 1, is characterized in that, The additives include one or more of vaseline, talcum powder, polymer emulsifier and stearic acid.

7. as the preparation method of the composite oxidant type emulsified granular ammonium nitrate oil explosive described in any one of claim 1-6, it is characterized in that, The following steps are involved: Mixing porous granular ammonium nitrate, calcium nitrate and liquid diesel to obtain a semi-finished product; The semi-finished product is mixed with a latex matrix and then an additive is added to obtain a composite oxidant type emulsified granular ammonium oil explosive.

8. the preparation method of composite oxidant type emulsified granular ammonium nitrate oil explosive as claimed in claim 7 is characterized in that, During the preparation of the semi-finished product, the rotation speed of the mixing screw is controlled to be 20-65 r / min.

9. the preparation method of composite oxidant type emulsified granular ammonium nitrate oil explosive as claimed in claim 7 is characterized in that, During the mixing of the semi-finished product, the latex matrix and the additive, the rotation speed of the double-screw mixer is controlled to be 20-65 r / min.

10. The preparation method of composite oxidant type emulsified granular ammonium nitrate oil explosive as claimed in claim 9, wherein Before the semi-finished product, the latex matrix and the additive are mixed, the temperature of the latex matrix is ​​controlled to be 20-45°C.

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