A novel emulsified granular ammonium oil-fuel explosive and its preparation method

Abstract

The present invention relates to a novel emulsified granular ammonium nitrate-oil explosive and a preparation method thereof, wherein the components include: liquid diesel, porous granular ammonium nitrate and colloidal diesel, and additives; the colloidal diesel includes diesel, a thickener and an emulsifier. In the present application, the colloidal diesel is innovatively used as a composite oil phase to replace the latex matrix. On the one hand, the latex matrix does not need to be produced separately, and on the other hand, the colloidal diesel has strong viscosity and can tightly coat the ammonium nitrate particles and lock the diesel in the pores of the ammonium nitrate particles; after the colloidal diesel is added, the explosive can maintain good viscosity for a long time and is not easy to agglomerate; in general, the present application overcomes the defects of easy seepage of diesel, agglomeration and hardening, and prolongs the storage period of the emulsified granular ammonium nitrate-oil explosive.

Description

Technical Field

[0001] The invention relates to the technical field of ammonium nitrate oil explosive, and in particular to a novel emulsified granular ammonium nitrate oil explosive and a preparation method thereof. Background Art

[0002] Emulsified granular ammonium oil oil explosive is a mixed explosive made by mixing an emulsion explosive matrix with porous granular ammonium oil oil explosive. That is, porous granular ammonium nitrate and light diesel oil are mixed in proportion to form porous granular ammonium oil oil explosive; the porous granular ammonium oil oil explosive is then mixed with a latex matrix in different proportions to form emulsified granular ammonium oil oil explosive with different properties. The explosive has the advantages of high charging efficiency, high density, high explosive energy, low cost, and certain water resistance; however, the emulsified granular ammonium oil oil explosive is prone to agglomeration when produced in spring and summer; and the viscosity of the explosive disappears quickly, which brings many inconveniences to its use; therefore, a new formula and production process are needed to solve this problem. Summary of the invention

[0003] In order to solve the problems that emulsified granular ammonium oil-fuel oil explosive is easy to agglomerate and loses viscosity quickly, the present invention provides a novel emulsified granular ammonium oil-fuel oil explosive and a preparation method thereof;

[0004] A novel emulsified granular ammonium nitrate oil explosive, comprising: liquid diesel, porous granular ammonium nitrate and colloidal diesel, and additives;

[0005] The colloidal diesel comprises liquid diesel, a thickener and an emulsifier.

[0006] Furthermore, the thickener is an aluminum soap type thickener, and the mass ratio of liquid diesel, aluminum soap type thickener and emulsifier in the colloidal diesel is 100:(5-18):(2-10).

[0007] Furthermore, the additives include one or more of vaseline, compound wax, rosin, and stearic acid.

[0008] Furthermore, the emulsifier includes one or more of Span 80, polyisobutylene maleic anhydride emulsifier, and soybean lecithin.

[0009] Furthermore, the liquid diesel is mixed with porous granular ammonium nitrate to form porous granular ammonium oil explosive, wherein the weight percentage of the porous granular ammonium nitrate is 94-95%, and the weight percentage of the liquid diesel is 5-6%.

[0010] Furthermore, the weight percentage of the porous granular ammonium oil-fuel explosive is 80-94%, the weight percentage of the colloidal diesel is 5-6%, and the weight percentage of the additive is 1-15%.

[0011] The present invention also provides a method for preparing the novel emulsified granular ammonium nitrate oil explosive, comprising the steps of mixing liquid diesel and porous granular ammonium nitrate to obtain porous granular ammonium nitrate oil explosive;

[0012] Adding a thickener and an emulsifier into liquid diesel and mixing them to obtain a colloid diesel;

[0013] The porous granular ammonium oil-fuel oil explosive is mixed with colloidal diesel and additives to obtain a novel emulsified granular ammonium oil-fuel oil explosive.

[0014] Furthermore, the porous granular ammonium nitrate is quantitatively measured by the quantitative spiral and then enters the first mixing spiral; the liquid diesel is measured by the diesel flow meter and then sprayed into the first mixing spiral to be mixed with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0015] The colloidal diesel oil is quantitatively fed through the quantitative screw and then enters the ammonium oil-fuel mixture mixing screw to be stirred and mixed with the porous granular ammonium oil-fuel mixture to obtain a novel emulsified granular ammonium oil-fuel mixture.

[0016] Furthermore, the screw speed of the porous granular ammonium nitrate and liquid diesel is 25-60r / min.

[0017] Furthermore, the spiral speed of mixing the colloidal diesel, additives and porous granular ammonium oil-fuel mixture is 25-60 r / min, and the temperature of the colloidal diesel is 20-55°C.

[0018] Beneficial effects:

[0019] In the present application, colloidal diesel is innovatively used as a composite oil phase to replace the latex matrix. On the one hand, there is no need to produce the latex matrix separately. On the other hand, the colloidal diesel has strong viscosity and can tightly coat the ammonium nitrate particles and lock the diesel in the pores of the ammonium nitrate particles. After adding the colloidal diesel, the explosive can maintain good viscosity for a long time and is not easy to agglomerate. In general, the present application overcomes the defects of diesel being easy to seep out, agglomerate and harden, and prolongs the storage period of the emulsified granular ammonium nitrate oil explosive. DETAILED DESCRIPTION

[0020] The following examples are provided for a better understanding of the present invention, but are not intended to limit the best mode of implementation, nor to limit the content and protection scope of the present invention. Any product identical or similar to the present invention obtained by anyone under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention.

[0021] If no specific experimental steps or conditions are specified in the examples, the conventional experimental steps or conditions described in the literature in the field can be used. If no manufacturer is specified for the reagents or instruments used, they are all conventional reagent products that can be obtained commercially.

[0022] Example 1

[0023] A kind of preparation method of novel emulsified granular ammonium oil-fuel explosive:

[0024] According to the formula: porous granular ammonium oil explosive 80wt%, colloidal diesel 6wt%, rosin 2wt%, stearic acid 2wt%, vaseline 10wt%;

[0025] The porous granular ammonium nitrate oil explosive contains 94wt% of porous granular ammonium nitrate and 6wt% of liquid diesel.

[0026] The colloidal diesel comprises 100 parts by weight of liquid diesel, 5 parts by weight of fatty acid aluminum soap and 5 parts by weight of Span 80, and the three raw materials are mixed.

[0027] The porous granular ammonium nitrate is quantitatively fed through the quantitative screw and then fed into the mixing screw; the liquid diesel is metered through the diesel flow meter and then sprayed into the mixing screw at a speed of 25 r / min to mix with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0028] The temperature of the colloidal diesel is 20°C. The colloidal diesel and the additive are quantified by the quantitative screw respectively, and then enter the ammonium oil-fuel mixture mixing screw at a speed of 25r / min, and are stirred and mixed with the porous granular ammonium oil-fuel mixture to obtain a new type of emulsified granular ammonium oil-fuel mixture.

[0029] Example 2

[0030] A kind of preparation method of novel emulsified granular ammonium oil-fuel explosive:

[0031] According to the formula: porous granular ammonium oil explosive 85wt%, colloidal diesel 5wt%, composite wax 2wt%, stearic acid 3wt%, vaseline 5wt%%;

[0032] The porous granular ammonium nitrate oil explosive contains 95wt% of porous granular ammonium nitrate and 5wt% of liquid diesel.

[0033] The colloidal diesel comprises 100 parts of liquid diesel, 10 parts of fatty acid aluminum soap and 2 parts of Span 80 by weight, and the three raw materials are mixed.

[0034] The porous granular ammonium nitrate is quantitatively fed through the quantitative screw and then fed into the mixing screw; the liquid diesel is metered through the diesel flow meter and then sprayed into the mixing screw at a speed of 35 r / min to mix with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0035] The temperature of the colloidal diesel is 30°C. The colloidal diesel and the additive are quantified by the quantitative screw respectively and then enter the ammonium oil-fuel mixture mixing screw at a speed of 35r / min, where they are stirred and mixed with the porous granular ammonium oil-fuel mixture to obtain a new type of emulsified granular ammonium oil-fuel mixture.

[0036] Example 3

[0037] A kind of preparation method of novel emulsified granular ammonium oil-fuel explosive:

[0038] According to the formula: porous granular ammonium oil explosive 90wt%, colloidal diesel 5wt%, vaseline 5wt%;

[0039] The porous granular ammonium nitrate oil explosive contains 95wt% of porous granular ammonium nitrate and 5wt% of liquid diesel.

[0040] The colloidal diesel comprises, by weight, 100 parts of liquid diesel, 15 parts of fatty acid aluminum soap, 2 parts of soybean lecithin, and 6 parts of Span 80, and the three raw materials are mixed.

[0041] The porous granular ammonium nitrate is quantitatively fed through the quantitative screw and then fed into the mixing screw; the liquid diesel is metered through the diesel flow meter and then sprayed into the mixing screw at a speed of 35 r / min to mix with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0042] The temperature of the colloidal diesel is 30°C. The colloidal diesel and the additive are quantified by the quantitative screw respectively and then enter the ammonium oil-fuel mixture mixing screw at a speed of 35r / min, where they are stirred and mixed with the porous granular ammonium oil-fuel mixture to obtain a new type of emulsified granular ammonium oil-fuel mixture.

[0043] Example 4

[0044] A kind of preparation method of novel emulsified granular ammonium oil-fuel explosive:

[0045] According to the formula: porous granular ammonium oil explosive 93wt%, colloidal diesel 5wt%, vaseline 2wt%;

[0046] The porous granular ammonium nitrate oil explosive contains 94wt% of porous granular ammonium nitrate and 6wt% of liquid diesel.

[0047] The colloidal diesel comprises 100 parts of liquid diesel, 8 parts of fatty acid aluminum soap and 10 parts of polyisobutylene bissuccinimide (T152) by weight, and the three raw materials are mixed.

[0048] The porous granular ammonium nitrate is quantitatively fed through the quantitative screw and then fed into the mixing screw; the liquid diesel is metered through the diesel flow meter and then sprayed into the mixing screw at a speed of 50 r / min to mix with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0049] The temperature of the colloidal diesel is 30°C. The colloidal diesel and the additive are quantified by the quantitative screw respectively, and then enter the ammonium oil-fuel mixture mixing screw at a speed of 50r / min, and are stirred and mixed with the porous granular ammonium oil-fuel mixture to obtain a new type of emulsified granular ammonium oil-fuel mixture.

[0050] Example 5

[0051] A kind of preparation method of novel emulsified granular ammonium oil-fuel explosive:

[0052] According to the formula: porous granular ammonium oil-fuel explosive 94wt%, colloidal diesel 5wt%, vaseline 1wt%;

[0053] The porous granular ammonium nitrate oil explosive contains 95wt% of porous granular ammonium nitrate and 5wt% of liquid diesel.

[0054] The colloidal diesel comprises 100 parts of liquid diesel, 18 parts of fatty acid aluminum soap and 4 parts of Span 80 by weight, and the three raw materials are mixed.

[0055] The porous granular ammonium nitrate is quantitatively fed through the quantitative screw and then fed into the mixing screw; the liquid diesel is metered through the diesel flow meter and then sprayed into the mixing screw at a speed of 60 r / min to mix with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0056] The temperature of the colloidal diesel is 40°C. The colloidal diesel and the additive are quantitatively measured by the quantitative screw respectively, and then enter the mixing screw at a speed of 60r / min, and are stirred and mixed with the porous granular ammonium oil-fuel explosive to obtain a new type of emulsified granular ammonium oil-fuel explosive.

[0057] Comparative Example 1

[0058] According to the formula: porous granular ammonium oil explosive 94wt%, composite oil phase 3wt%, liquid diesel 3wt%;

[0059] The composite oil phase includes 70wt% vaseline, 5wt% stearic acid, 5wt% rosin, 10wt% emulsifier SP-80, and 10wt% polymer emulsifier (polyisobutylene succinimide);

[0060] The porous granular ammonium nitrate is quantitatively fed through the quantitative screw and then fed into the mixing screw; the liquid diesel is metered through the diesel flow meter and then sprayed into the mixing screw at a speed of 60 r / min to mix with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive;

[0061] After the composite oil phase is quantitatively measured by the quantitative screw, it enters the mixing screw at a speed of 60r / min, and is stirred and mixed with the porous granular ammonium oil-fuel explosive to obtain the traditional emulsified granular ammonium oil-fuel explosive.

[0062] The explosives prepared in the above 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:

[0063] The detection method of detonation velocity refers to GB / T 13228 standard.

[0064] Table 1

[0065]

[0066]

Claims

1. A novel emulsified granular ammonium oil-fuel mixture, characterized in that, The novel emulsified granular ammonium oil-fuel mixture comprises: liquid diesel, porous granular ammonium nitrate, colloidal diesel, and additives. The colloidal diesel comprises liquid diesel, a thickener and an emulsifier; The thickener is an aluminum soap type thickener, and the emulsifier includes one or more of Span 80, polyisobutylene maleic anhydride emulsifier, and soybean lecithin; The mass ratio of liquid diesel, aluminum soap type thickener and emulsifier in the colloidal diesel is 100:(5-18):(2-10); The additives include one or more of vaseline, compound wax, rosin, and stearic acid; The preparation method of the novel emulsified granular ammonium oil-fuel mixture comprises the following steps: Mixing liquid diesel and porous granular ammonium nitrate to obtain porous granular ammonium oil explosive, wherein the porous granular ammonium nitrate accounts for 94-95% by weight and the liquid diesel accounts for 5-6% by weight; Adding a thickener and an emulsifier into liquid diesel and mixing them to obtain a colloid diesel; The porous granular ammonium oil-fuel oil explosive is mixed with colloidal diesel and additives to obtain a novel emulsified granular ammonium oil-fuel oil explosive, wherein the weight percentage of the porous granular ammonium oil-fuel oil explosive is 80-94%, the weight percentage of the colloidal diesel is 5-6%, and the weight percentage of the additive is 1-15%.

2. the preparation method of novel emulsified granular ammonium nitrate oil explosive according to claim 1, is characterized in that, The porous granular ammonium nitrate is quantitatively measured by the quantitative spiral and then enters the first mixing spiral; the liquid diesel is measured by the diesel flow meter and then sprayed into the first mixing spiral to be mixed with the porous granular ammonium nitrate to obtain the porous granular ammonium oil explosive; The colloidal diesel and the additive are respectively quantitatively metered by the quantitative screw, and then enter the first mixing screw to be stirred and mixed with the porous granular ammonium oil-fuel mixture to obtain a novel emulsified granular ammonium oil-fuel mixture.

3. the preparation method of novel emulsified granular ammonium nitrate oil explosive according to claim 2 is characterized in that, The mixing screw speed of the porous granular ammonium nitrate and liquid diesel is 25-60r / min.

4. the preparation method of novel emulsified granular ammonium nitrate oil explosive according to claim 2 is characterized in that, The mixing screw speed of the porous granular ammonium oil-fuel explosive and the colloid diesel is 25-60r / min, and the temperature of the colloid diesel is 20-55°C.

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