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Coten base enamel and glazeslip thereof

A technology of enamel and bottom glaze, which is applied in the field of enamel bottom glaze and its glaze slurry, which can solve the problems of poor corrosion resistance to acid gas, shorten the service life of heat transfer elements, and accelerate the erosion of heat transfer elements of flue gas heaters. To achieve the effect of ensuring the adhesion performance

Inactive Publication Date: 2011-05-04
HARBIN TIANLU ENAMEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the enamel layer is gradually corroded by acid gas, the heat transfer element will expose the surface of low-carbon steel after a certain period of use, and the corrosion resistance of low-carbon steel to acid gas is very poor, so it will Accelerates the corrosion of the heat transfer elements of the flue gas heater by the acid gas, thereby greatly shortening the service life of the heat transfer elements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Corten steel enamel base glaze, the composition of which includes: SiO 2 、Al 2 o 3 、K 2 O, Na 2 O.B 2 o 3 , Li 2 O, CaO, CoO, NiO, Fe 2 o 3 , MnO, its parts by weight are: SiO 2 58.62 parts, Al 2 o 3 2.16 copies, K 2 O1.80 parts, Na 2 O11.35 copies, B 2 o 3 14.45 parts, Li 2 O3.35 parts, CaO4.08 parts, CoO0.82 parts, NiO1.51 parts, Fe 2 o 3 0.46 parts, MnO1.53 parts.

[0030] Production process:

[0031] (1) SiO 2 58.62 parts, Al 2 o3 2.16 copies, K 2 O+Na 2 O13.02 copies, B 2 o 3 14.45 parts, Li 2 O3.35 parts, CaO4.08 parts, CoO0.82 parts, NiO1.51 parts, Fe 2 o 3 0.46 parts and 1.53 parts of MnO were mixed and stirred for 20 minutes, and the uniformity was above 90%;

[0032] (2) Melt the product described in step (1) at 1250-1350°C for 2.5 hours. The wire drawing inspection is bright and free of bubbles. The wire drawing allows 2-3 nodules, and then undergoes water stimulation and drying to obtain the corten steel enamel bottom glaze .

Embodiment 2

[0034] Corten steel enamel bottom glaze glaze slurry, its composition includes: above-mentioned Corden steel enamel bottom glaze, sodium aluminate, clay, cobalt oxide, anti-scale explosion agent, borax, nitrous, calcined quartz, and its weight fraction ratio is: Denggang enamel base glaze 100 parts, sodium aluminate 0.25 parts, clay 6.5 parts, cobalt oxide 0.4 parts, anti-scale explosion agent 0.5 parts, borax 0.4 parts, nitrous 0.1 parts, calcined quartz 3-5 parts.

[0035] Production process:

[0036] Add 0.25 parts of sodium aluminate, 6.5 parts of clay, 0.3 parts of cobalt oxide, 0.8 parts of anti-scale explosion agent, 0.4 parts of borax, 0.1 parts of nitrous, 3-5 parts of calcined quartz, and water to 100 parts of the above-mentioned Corten steel enamel bottom glaze 45 parts, ground for 20 hours, the fineness reaches 180 mesh and 1.5 grams are left on the sieve, and stored.

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Abstract

The invention relates to coten base enamel and glazeslip thereof. The contents of some ingredients in the chemical component of coten are excessive for production of the enamel and are unbeneficial to the quality of a product; the key for overcoming the adverse factors is to determine suitable special base enamel capable of ensuring the enamel quality and the physicochemical property. The coten base enamel comprises the following components: 57.80-59.30 parts of SiO2, 32.06-2.70 parts of Al2O3, 1.80-2.80 parts of K2O, 10.98-11.35 parts of Na2O, 12.76-16.05 parts of B2O3, 2.80-1.00 parts of Li2O2, 3.80-4.80 parts of CaO, 0.60-1.50 parts of CoO, 1.401-2.00 parts of NiO, 0.20-0.80 part of Fe2O3 and 1.40-2.00 parts of MnO. The coten base enamel is utilized as an acid resistant and anticorrosive coten heat transfer element coating.

Description

Technical field: [0001] The invention relates to an enamel bottom glaze and a glaze slurry thereof, in particular to a corten steel enamel bottom glaze and a corten steel enamel bottom glaze slurry. Background technique: [0002] Corten Steel is high weather-resistant structural steel, also known as atmospheric corrosion-resistant steel. The so-called Corten steel is to add a small amount of alloying elements, such as Cu, P, Cr, Ni, etc., to the steel to form a protective layer on the surface of the metal substrate, thereby improving the weather resistance of the steel. [0003] For the flue gas heater, its working principle is simply that the heat transfer element absorbs the heat of the dirty flue gas to heat the clean flue gas discharged from the desulfurization tower. Since the temperature is below the dew point of sulfuric acid during the heat exchange, the heat transfer element of the flue gas heater must have high corrosion resistance. The usual practice is to use l...

Claims

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Application Information

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IPC IPC(8): C03C8/02C03C8/16
Inventor 刘广阳
Owner HARBIN TIANLU ENAMEL
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