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Ventilation flue, and preparation method and application thereof

A flue and system technology, applied in vertical pipes, building components, buildings, etc., to achieve the effect of smooth surface, simple preparation process and good water resistance

Inactive Publication Date: 2017-09-08
于世宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in order to overcome the defect of prior art, obtain a kind of ventilation flue without free magnesium chloride, and water resistance is good, not easily deformed, without the phenomenon of moisture absorption and halogen return, the invention provides a kind of ventilation flue and Its preparation method and application

Method used

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  • Ventilation flue, and preparation method and application thereof
  • Ventilation flue, and preparation method and application thereof
  • Ventilation flue, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A ventilation flue, the main material of the ventilation flue is magnesium sulfate heptahydrate, supplemented by inorganic and organic fillers.

[0031] In parts by weight, the ventilation flue includes 45 parts of magnesium sulfate heptahydrate, 13 parts of calcium silicate powder, 11 parts of perlite, 3 parts of gypsum, 3 parts of fine stone, 4 parts of sawdust, 1 part of phosphoric acid and 28 parts of water.

[0032] Among them, the technical indicators of magnesium sulfate heptahydrate are shown in Table 1, and the implementation standard is HG / T 2680-2009:

[0033] Table 1 Technical indicators of magnesium sulfate heptahydrate (%)

[0034] Test items main content Magnesium (Mg) Iron (Fe) Arsenic (As) pH value PB value Impurities Detection Indicator ≥99.90% ≥9% ≤0.015% ≤0.002% 5.0-9.2 ≤0.006% Excluding Test results 99.95% 9.39% 0.013% 0.0015% 7.3 0.0046% Excluding

[0035] The technical indicators of silicon-cal...

Embodiment 2

[0048] A ventilation flue, the main material of the ventilation flue is magnesium sulfate heptahydrate, supplemented by inorganic and organic fillers.

[0049] In parts by weight, the ventilation flue includes 62 parts of magnesium sulfate heptahydrate, 21 parts of calcium silicate powder, 15 parts of perlite, 8 parts of gypsum, 6 parts of fine stone, 11 parts of sawdust, 3 parts of phosphoric acid and 33 parts of water.

[0050] Among them, the technical indicators of magnesium sulfate heptahydrate are shown in Table 1, and the implementation standard is HG / T 2680-2009:

[0051] Table 1 Technical indicators of magnesium sulfate heptahydrate (%)

[0052] Test items main content Magnesium (Mg) Iron (Fe) Arsenic (As) pH value PB value Impurities Detection Indicator ≥99.90% ≥9% ≤0.015% ≤0.002% 5.0-9.2 ≤0.006% Excluding Test results 99.95% 9.39% 0.013% 0.0015% 7.3 0.0046% Excluding

[0053] The technical indicators of silicon-c...

Embodiment 3

[0066] A ventilation flue, the main material of the ventilation flue is magnesium sulfate heptahydrate, supplemented by inorganic and organic fillers.

[0067] In parts by weight, the ventilation flue includes 70 parts of magnesium sulfate heptahydrate, 26 parts of calcium silicate powder, 19 parts of perlite, 12 parts of gypsum, 8 parts of fine stone, 15 parts of sawdust, 4 parts of phosphoric acid and 39 parts of water.

[0068] Among them, the technical indicators of magnesium sulfate heptahydrate are shown in Table 1, and the implementation standard is HG / T 2680-2009:

[0069] Table 1 Technical indicators of magnesium sulfate heptahydrate (%)

[0070] Test items main content Magnesium (Mg) Iron (Fe) Arsenic (As) pH value PB value Impurities Detection Indicator ≥99.90% ≥9% ≤0.015% ≤0.002% 5.0-9.2 ≤0.006% Excluding Test results 99.95% 9.39% 0.013% 0.0015% 7.3 0.0046% Excluding

[0071] The technical indicators of silicon-...

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Abstract

The invention discloses a ventilation flue, and a preparation method and an application thereof. The ventilation flue utilizes magnesium sulfate heptahydrate as a raw material supplemented by inorganic and organic fillers, and comprises the following components in parts by weight: 45-70 parts of magnesium sulfate heptahydrate, 13-26 parts of calcium silicon powder, 11-19 parts of perlite, 3-12 parts of gypsum, 3-8 parts of fine stones, 4-15 parts of sawdust, 1-4 parts of phosphoric acid and 28-39 parts of water. The preparation method comprises the steps of slurry preparation, primary pouring, secondary pouring, mold removal and curing. The ventilation flue provided by the invention does not dissolve out free chloride ions after being soaked into water, and hydrate is stable and not prone to decompose, so that the ventilation flue is good in water resistance and are not subjected to a moisture absorption and active magnesia phenomenon; products are smooth and regular in surface, small in friction coefficient, low in wind resistance, free of deformation and crack, good in stability and excellent in mechanical properties and chemical properties.

Description

technical field [0001] The invention belongs to the field of kitchen smoke exhaust systems, and relates to a ventilation flue, in particular to a ventilation flue and its preparation method and application. Background technique [0002] In recent years, the speed of urbanization in my country has gradually accelerated, and the population of cities and towns has become more and more concentrated, followed by more and more urbanized high-rise buildings, even super high-rise buildings. As the heart of the residential center, the kitchen has gradually been paid attention to its sanitation and cleanliness. In order to eliminate pollutants such as cooking fume from cooking in the kitchen, and to ensure the appearance of high-rise building facades, my country's residential smoke exhaust design code requires the installation of centralized exhaust ducts. At present, residential shared smoke exhaust systems can generally be divided into three types: centralized system, hybrid syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30E04F17/02C04B111/27C04B111/20
CPCC04B28/30C04B2111/20C04B2111/27C04B2201/20E04F17/02C04B14/02C04B14/18C04B14/043C04B22/143C04B18/26C04B22/165
Inventor 于世宁
Owner 于世宁
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