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Preparation method of binding agent capable of restraining swirling coal powder of coal train

A binder and pulverized coal technology, applied in chemical instruments and methods, mining equipment, earth-moving drilling, etc., can solve the problems of difficult matching of automatic production lines, tarpaulin covering, slow removal speed, and affecting coal transportation efficiency, etc. To achieve the effect of long curing duration, good spreadability, strong wind resistance and water erosion resistance

Inactive Publication Date: 2010-02-03
吉仁塔布
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Mechanical capping method: Capping each car body can effectively prevent coal dust pollution, but the cost is high and the effective load is low
Moreover, a series of actions such as opening the cover, opening, closing position and opening direction will have an impact on the existing mechanized coal loading and unloading process, and it is difficult to match the existing automatic production line, which is not feasible in practice.
[0005] (2) Tarpaulin covering method: This method is commonly used in automobile transportation, but the railway transportation has a high degree of automation, a large traffic flow, and a fast operation speed, which requires a lot of manpower (according to calculations, 4 to 5 people per car) to complete. At the same time, tarpaulin covering and withdrawal are slow, which affects the efficiency of coal transportation, is difficult to implement, and the cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: A kind of preparation method of binding agent that suppresses pulverized coal flying in coal trains comprises the following steps: (1), preparation of oxidized starch; (2), preparation of binding agent;

[0013] Among them (1), preparation of oxidized starch: add 200 kg of water at 45°C-70°C to the reactor, add 40 kg of cornstarch, stir to make the starch fully dissolve in water, and slowly add the concentration of 0.0075g / ml Add 75 kg of NaOH solution, add 1 kg of hydrogen peroxide, and stir to fully gelatinize the cornstarch; after gelatinization, add 275 kg of NaOH solution with a concentration of 0.0075g / ml and 1 kg of hydrogen peroxide, and stir for more than 1 hour until the gelatinized state disappear, and the reactor is kept at 45-70°C throughout the preparation process to produce oxidized starch;

[0014] (2) Preparation of binder: Add 1 kg of ammonium lignosulfonate and 10 kg of water into the reactor for preparing oxidized starch, and add 8 kg o...

Embodiment 2

[0015] Embodiment 2: A kind of preparation method of binding agent that suppresses pulverized coal flying in coal trains comprises the following steps: (1), preparation of oxidized starch; (2), preparation of binding agent;

[0016] Among them (1), the preparation of oxidized starch: add 800 kilograms of water of 45 ℃-70 ℃ in the reactor, add the cornstarch of 120 kilograms, after stirring to fully dissolve the starch in water, slowly add the concentration of 0.02g / ml Add 250 kg of NaOH solution, add 3 kg of hydrogen peroxide, and stir to fully gelatinize the cornstarch; after gelatinization, add 600 kg of NaOH solution with a concentration of 0.02g / ml and 3 kg of hydrogen peroxide, and stir for more than 1 hour until the gelatinized state disappear, and the reactor is kept at 45-70°C throughout the preparation process to produce oxidized starch;

[0017] (2) Preparation of binder: Add 10 kg of magnesium lignosulfonate and 25 kg of water into the reactor for preparing oxidized...

Embodiment 3

[0018] Embodiment 3: A kind of preparation method of binding agent that suppresses pulverized coal flying in coal trains comprises the following steps: (1), preparation of oxidized starch; (2), preparation of binding agent;

[0019] Among them (1), preparation of oxidized starch: add 500 kg of water at 45°C-70°C to the reactor, add 80 kg of cornstarch, stir to make the starch fully dissolve in water, and then slowly add a concentration of 0.01375g / ml Add 163 kg of NaOH solution, add 2 kg of hydrogen peroxide, and stir to fully gelatinize the cornstarch; after gelatinization, add 438 kg of NaOH solution with a concentration of 0.01375 g / ml and 2 kg of hydrogen peroxide, and stir for more than 1 hour until the gelatinized state disappear, and the reactor is kept at 45-70°C throughout the preparation process to produce oxidized starch;

[0020] (2) Preparation of binder: Add 5.5 kg of calcium lignosulfonate and 18 kg of water into the reactor for preparing oxidized starch, and ad...

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Abstract

The invention discloses a preparation method of a binding agent capable of restraining the swirling coal powder of a coal train, comprising the following steps: (1) the preparation of oxidized starch;(2) the preparation of the binding agent. The preparation method has the advantages that the product adopts lignin sulfonate which is salvaged material in papermaking industry, corn starch, sodium hydroxide and hydrogen peroxide to prepare the binding agent capable of restraining the swirling coal powder of a train used for transporting coal; the product has no corrosivity, volatility, non-hydrophilic property and hard-degradation. The product has good permeability and spreadability, long curing duration, strong wind erosion resistance and water erosion resistance, cheaper price and better performance compared with similar products, low dosage, high bonding efficiency, no secondary pollution, short production cycle, simple usage, easy transportation and storage and wide applicability. Thebinding agent can form a curing layer which can not be peeled off when the train is in movement so as to reach the aim of preventing the coal powder to fly and reduce the loss of coal in transit. Themethod has simple operation, can save time and labor, and has low cost.

Description

Technical field: [0001] The invention relates to a preparation method of a binder, in particular to a preparation method of a binder for suppressing the flying of pulverized coal in a coal train. Background technique: [0002] Inner Mongolia is a major coal-producing province, and special coal trains are transported all the year round: ①Due to the influence of train speed, weather, man-made, road conditions, theft and other conditions, the loss rate during transportation is as high as 10%; Coal powder has a large amount of dust, and the coal powder is suspended in the air, causing great pollution to human breathing and the surrounding environment; ③When the train passes through the tunnel, affected by the high-speed airflow, the coal powder will be blown out of the car and accumulate for a long time. It will cause suffocation and seriously affect the normal operation of equipment in the cave and the health of railway workers. At the same time, long-term gathering may cause e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00B65G69/18E21F5/08
Inventor 吉仁塔布
Owner 吉仁塔布
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