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Gunning Material

Gunning Material (refractory gunning mix) is made up of refractory material, chemical binder and admixture with certain grain gradation, and the amorphous refractory used to repair the lining of thermal equipment by spray construction method.

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Gunning Material

Introduction

Gunning Material (refractory gunning mix) is made up of refractory material, chemical binder and admixture with certain grain gradation, and the amorphous refractory used to repair the lining of thermal equipment by spray construction method. It is a major type of spray material. The size composition and limit granularity of gunning material should be determined according to the structure of gunning machine, the thickness of gunning layer and different gunning methods. Improper particle size selection or unreasonable particle gradation have great influence on the adhesion of gunning material and the density of gunning layer.


Specification

MgO

(%)

SiO2

(%)

Fe2O3

(%)

CaO

(%)

BD g/cm3

Cold Crushing Strength

1500℃×2hr(Mpa)

Linear change 1500℃×2hr(%)

≥90

4-6

≤1.5

≤2

≥2.5

≥12

≤1.5

87-89

2-4

≤1.5

4-6

≥2.5

≥10

≤1.5

72-74

18-20

3-5

≤2

≥2.4

≥10

≤1.8

66-68

24-26

4-6

≤2

≥2.4

≥10

≤1.8

P.S.: The grain size and specification of the product can be made as required.


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