Preparation process of mineral heating agent

A technology of exothermic agents and minerals, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of short temperature duration, slow heating rate of exothermic agents, and high heating temperature, and achieve long duration and fast heating rate. , the effect of rapid heating

Inactive Publication Date: 2008-01-16
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (1) The cost of preparing exothermic agents with chemically pure grade chemical reagents is high, industrial production is difficult, and product promotion is not easy;
[0014] (2) The exothermic agent prepared with aluminum powder (Al) and quicklime powder (CaO) has a slow heating rate, a short duration of temperature, a large dosage, and inconvenient use;
[0015] (3) The exothermic agent prepared with metal aluminum, hematite, corundum, mullite and quartz has a high heating temperature and complex ingredients, so it is not suitable for heating food and drinks;
[0016] (4) Prepare exothermic agent with iron powder, salt, sawdust (used as water carrier), catalyst A, catalyst B, the exothermic temperature is low, can't meet the needs of heating food and drink;
[0017] (5) Single function, only heating function, no health care function

Method used

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  • Preparation process of mineral heating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]First, block limestone (with a particle size range of 100-300mm) is calcined in a muffle furnace at 950°C for 2.5 hours to produce activated calcium oxide; then, the activated calcium oxide is crushed to a size below 5mm by a jaw crusher; The activated calcium oxide is ground to a particle size of ≤0.076mm with a Raymond mill to obtain activated calcium oxide powder; then, the activated calcium oxide powder and aluminum powder with a particle size of ≤0.076mm are mixed at room temperature at a low speed (600r / min) and mix for 1 min; then add negative ion powder, heat up to 45°C and compound for 3 minutes; pass the compounded mixed powder and trigger agent through high-energy mechanical force and shear force in a universal pulverizer under high-speed conditions (1000r / min) , impact force, etc., make the mixed powder get surface modification 20S, and then pack it to form a product. Trigger agent required particle size: ≤0.15mm; composed of caustic soda (NaOH purity above ...

Embodiment 2

[0049] First, block limestone (with a particle size range of 100-300mm) is calcined in a muffle furnace at 1000°C for 2 hours to produce activated calcium oxide; then, the activated calcium oxide is crushed to a size below 5mm by a jaw crusher; The activated calcium oxide is ground to a particle size of ≤0.076mm with a Raymond mill to obtain activated calcium oxide powder; then, the activated calcium oxide powder and aluminum powder with a particle size of ≤0.076mm are mixed in a heat mixer at a low speed (200r / min) and mix for 5 minutes; then add negative ion powder, heat up to 50°C and compound for 1 minute; pass the compounded mixed powder and trigger agent through high-energy mechanical force and shear force in a universal pulverizer under high-speed conditions (1200r / min). , impact force, etc., make the mixed powder get surface modification 15S, and then pack it to form a product. Trigger agent required particle size: ≤0.15mm; composed of caustic soda (NaOH purity above ...

Embodiment 3

[0052] First, block limestone (with a particle size range of 100-300mm) is calcined in a muffle furnace at 900°C for 2 hours to produce activated calcium oxide; then, the activated calcium oxide is crushed to a size below 5mm by a jaw crusher; The activated calcium oxide is ground to a particle size of ≤0.076mm with a Raymond mill to obtain activated calcium oxide powder; then, the activated calcium oxide powder and aluminum powder with a particle size of ≤0.076mm are mixed in a heat mixer at a low speed (400r / min) and mix for 0.5min; then add negative ion powder, heat up to 40°C and compound for 5 minutes; pass the compounded mixed powder and trigger agent under high-speed conditions (800r / min) in a universal pulverizer through high-energy mechanical force, shear Under the action of compound forces such as force and impact force, the mixed powder is surface-modified for 30S, and then packaged to form a product. Trigger agent required particle size: ≤0.15mm; composed of caust...

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Abstract

A process of the mineral exothermic compound is the compound-surface treatment. The block limestone is calcined for 2-4h under 900-1000DEG C to make the active calcium oxide which is broken to 5mm, then the active calcium oxide is grinded to less than 0.076mm, next to mix the active calcium oxide powder and the aluminium powder which the particle size is less than 0.076mm for 0.5-5min; Then the anion powder is added into and compound them for 1-5min under 40-50DEG C. The compound powder and the catalyst are modified on surface for 15-30s with mixing at a high speed. The product has the high exothermic speed and releases the anion, so it can be used for the tourist to heat the food and the drinks.

Description

technical field [0001] The invention relates to the technical field of mineral processing and powder, in particular to a preparation method of a mineral exothermic agent. Background technique [0002] Mineral heating agent refers to a substance that utilizes the chemical effect between minerals or between minerals and other substances through scientific formulas, and the heat generated is used as a heat source to achieve the purpose of heating. Due to the advantage of spontaneous heating without electricity, fire or any other energy sources, it is widely used in casting, metallurgy, chemistry, medicine, life, food and other fields. [0003] Reasonable, efficient, full and intensive use of my country's superior mineral resources, abandoning the old way of thinking of producing a large number of mineral products and raw materials, and improving the comprehensive utilization level, scientific and technological content and added value of mineral resources, we should consider the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/14
Inventor 韩跃新任飞王蕴刘晓华
Owner NORTHEASTERN UNIV LIAONING
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