A method for evaluating the hydration resistance of alkaline refractories

A refractory and hydration-resistant technology, applied in the direction of material resistance, can solve the problems of large evaluation error, hydration resistance of difficult-to-alkali refractories, and long evaluation period, and achieve simple evaluation methods, shorten the detection period, Evaluate a wide range of effects

Active Publication Date: 2016-07-13
SUZHOU ZIGUANG WEIYE LASER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of evaluation method is obviously affected by the regional climate environment, the evaluation error is large, and the evaluation cycle is long (generally 3 to 6 months), it is difficult to comprehensively and accurately evaluate the hydration resistance of alkaline refractory materials

Method used

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  • A method for evaluating the hydration resistance of alkaline refractories
  • A method for evaluating the hydration resistance of alkaline refractories
  • A method for evaluating the hydration resistance of alkaline refractories

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for evaluating the hydration resistance of basic refractories containing MgO. The specific steps of the evaluation method are:

[0052] The first step is to crush the basic refractory material to 1-2 mm to obtain basic refractory material pellets.

[0053] Step 2: Weigh 1-3g of alkaline refractory granules and pour them into the first beaker, then measure the conductivity λ of the water to be poured into the first beaker 0 7.3×10 -4 S / m, and then add the water into the first beaker according to the mass ratio of the basic refractory material particles to the water is 1: (500-600).

[0054] In the third step, the first beaker after adding water is placed in a constant temperature drying oven at 25-30° C., and left to stand for 0.45-0.50 hours.

[0055] Step 4: Take out the first beaker and filter; then pour the filtered hydration solution into the second beaker, place it in a constant temperature drying oven at 25-30°C, and let it stand for 2-3 hours; take ou...

Embodiment 2

[0068] A method for evaluating the hydration resistance of basic refractories containing MgO. The specific steps of the evaluation method are:

[0069] The first step, with the first step of embodiment 1.

[0070] Step 2: Weigh 1-3g of alkaline refractory granules and pour them into the first beaker, then measure the conductivity λ of the water to be poured into the first beaker 0 6.8×10 -4 S / m, and then add the water into the first beaker according to the mass ratio of the basic refractory material granules to the water is 1: (600-700).

[0071] The third step is to place the first beaker after adding water in a constant temperature drying oven at 25-30° C., and let it stand still for 0.35-0.40 hours.

[0072] Step 4: Take out the first beaker and filter; then pour the filtered hydration solution into the second beaker, place it in a constant temperature drying oven at 25-30°C, and let it stand for 2-3 hours; take out the second beaker, Detect that the conductivity λ of t...

Embodiment 3

[0079] A method for evaluating the hydration resistance of basic refractories containing MgO. The specific steps of the evaluation method are:

[0080] The first step, with the first step of embodiment 1.

[0081] Step 2: Weigh 2-4g of alkaline refractory granules and pour them into the first beaker, then measure the conductivity λ of the water to be poured into the first beaker 0 9.6×10 -4 S / m, and then add the water into the first beaker according to the mass ratio of the basic refractory material granules to the water is 1: (550-650).

[0082] The third step is to place the first beaker after adding water in a constant temperature drying oven at 25-30° C., and let it stand still for 0.30-0.35 hours.

[0083] Step 4: Take out the first beaker and filter; then pour the filtered hydration solution into the second beaker, place it in a constant temperature drying oven at 25-30°C, and let it stand for 2.5-3.5 hours; take out the second beaker, Detect that the conductivity λ ...

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Abstract

The invention relates to a method for evaluating the hydration resistance of alkaline refractory materials. Its technical scheme is: measure the electric conductivity λ of water 0 , according to the solid-liquid mass ratio of 1: (500-800), add the basic refractory material and water into the first beaker, put it in a constant temperature drying oven at 25-30°C for 0.25-0.5h, and filter; the filtered water Pour the hydration solution into the second beaker, and let it stand in a constant temperature drying oven at 25-30°C for 2-4 hours; detect the conductivity λ of the hydration solution in the second beaker, and obtain the Mg in the hydration solution of the alkaline refractory material containing MgO 2+ concentration Or get Ca in the hydration solution of basic refractories containing CaO 2+ concentration Then, according to the evaluation reference table for the hydration resistance of the basic refractory containing MgO or CaO, the hydration resistance grade of the basic refractory to be evaluated can be obtained. The invention has the characteristics of simple method, high precision, wide evaluation range and good safety performance.

Description

technical field [0001] The invention belongs to the technical field of basic refractory application. In particular, it relates to a method for evaluating the hydration resistance of alkaline refractory materials. Background technique [0002] Since the advent of the basic converter steelmaking method in the 19th century, basic refractory materials have attracted much attention due to their excellent high-temperature performance and the ability to purify molten steel. At the same time, the inherent hydration characteristics of alkaline refractories also directly restrict their industrial production and use. How to accurately and comprehensively evaluate the hydration resistance of alkaline refractories has become an important parameter to measure the comprehensive performance of alkaline refractories, and is also a key issue to promote the development of alkaline refractories. [0003] At present, the evaluation methods for the hydration resistance of alkaline refractory ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/06
Inventor 张寒赵惠忠李静捷丁雄风陈金凤何晴王立锋
Owner SUZHOU ZIGUANG WEIYE LASER TECH CO LTD
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