Energy-saving high heat quake-resistant kiln structure material prepared by utilizing waste refractory kiln furniture and method thereof

Abstract

The invention discloses an energy-saving heat quake-resistant kiln structure material prepared by utilizing waste refractory kiln furniture and a method thereof. The energy-saving heat quake-resistant kiln structure material comprises the following materials in percentage by weight: 40 to 90 percent of aggregate and 10 to 60 percent of compound substrate material; based on 100 weight parts of theaggregate and the compound substrate material, the energy-saving heat quake-resistant kiln structure material is additionally added with 0.5 to 10 percent of nucleating agent, 1.0 to 7.0 percent of additive, 0.5 to 5.0 percent of adhesive, 0.1 to 1.5 percent of dispersing agent, and 10 to 20 percent of water, wherein the aggregate is selected from cordierite-mullite, cordierite and mullite refractory kiln furniture waste clinker, the waste mullite clinker accounts for 10 to 50 percent and the waste mullite-cordierite composite clinker or waste cordierite clinker accounts for 50 to 90 percent;and the additive is a potassium-containing mineralized substance. The waste kiln furniture is taken as the aggregate, so the method has important significance for comprehensively utilizing waste resources, improving ecological environment, and saving energy and reducing consumption for the society.

Description

Technical field:

[0001] The invention relates to an energy-saving kiln structural material with high thermal shock resistance and a method thereof prepared by using waste refractory kiln furniture. Background technique:

[0002] Kiln body and kiln car structure system, including shuttle kiln, tunnel kiln, roller kiln kiln ceiling structure system, kiln wall system, hollow brick kiln car system, etc. The refractory materials traditionally used in the system are mainly refractory bricks, and refractory bricks include heavy bricks and light bricks.

[0003] During the firing process of the kiln, in addition to the heat energy required for the fired parts, the heat energy required for the kiln body and the kiln car structure system must also be supplied. Because the refractory brick is a solid structure and has a large specific gravity, it needs to absorb a large amount of heat energy, and the energy loss is large.

[0004] In addition, during the firing operation of the kiln,...

Examples

Embodiment 1

[0033] Example 1. An energy-saving and highly thermal-shock-resistant kiln structural material prepared by using waste refractory kiln furniture.

[0034] It is composed of materials with the following weight ratio: 75kg of aggregate, 25kg of composite matrix material, based on 100 parts by weight of the total components of aggregate and composite matrix material, plus: 3kg of zirconia micropowder, 4.5kg of potassium feldspar, particle size ≤ 325 Mesh; dextrin 2kg, methyl cellulose (MC) 1.5kg; sodium polyacrylate 1kg; water 15kg, of which:

[0035] (1) Aggregate, choose cordierite and mullite refractory kiln furniture waste clinker, the kiln furniture waste is obtained through sorting, impurity removal, crushing, sieving, and iron removal, with a particle size of ≤0.71mm ( 22 mesh sieve), mullite refractory kiln furniture waste clinker 30kg; cordierite refractory kiln furniture waste clinker 45kg;

[0036] (2) Composite matrix material is made up of materials with the followi...

Embodiment 2

[0037] Embodiment 2. A method for preparing energy-saving and highly thermal shock-resistant kiln structural materials by using waste refractory kiln furniture. The process includes:

[0038] (1) batching: prepare raw materials, batching by the method for embodiment 1;

[0039] (2) mixing ingredients, mixing and stirring the water of formula quantity and all materials;

[0040] (3) Vacuum mud refining, the material described in process (2) is stirred in a vacuum mud refining mixer, and the vacuum degree is less than or equal to 0.095Mpa;

[0041] (4) Extrusion molding, using a mold and a molding extruder to extrude molding;

[0042] (5) drying, the water content after drying is ≤1%;

[0043] (6) Firing, the product is crystallized and fired in a high-temperature furnace after drying, at a temperature of 1330°C-1410°C, and kept for 8-12 hours.

Technical field:

[0001] The invention relates to an energy-saving kiln structural material with high thermal shock resistance and a method thereof prepared by using waste refractory kiln furniture. Background technique:

[0002] Kiln body and kiln car structure system, including shuttle kiln, tunnel kiln, roller kiln kiln ceiling structure system, kiln wall system, hollow brick kiln car system, etc. The refractory materials traditionally used in the system are mainly refractory bricks, and refractory bricks include heavy bricks and light bricks.

[0003] During the firing process of the kiln, in addition to the heat energy required for the fired parts, the heat energy required for the kiln body and the kiln car structure system must also be supplied. Because the refractory brick is a solid structure and has a large specific gravity, it needs to absorb a large amount of heat energy, and the energy loss is large.

[0004] In addition, during the firing operation of the kiln,...

Examples

Embodiment 1

[0033] Example 1. An energy-saving and highly thermal-shock-resistant kiln structural material prepared by using waste refractory kiln furniture.

[0034] It is composed of materials with the following weight ratio: 75kg of aggregate, 25kg of composite matrix material, based on 100 parts by weight of the total components of aggregate and composite matrix material, plus: 3kg of zirconia micropowder, 4.5kg of potassium feldspar, particle size ≤ 325 Mesh; dextrin 2kg, methyl cellulose (MC) 1.5kg; sodium polyacrylate 1kg; water 15kg, of which:

[0035] (1) Aggregate, choose cordierite and mullite refractory kiln furniture waste clinker, the kiln furniture waste is obtained through sorting, impurity removal, crushing, sieving, and iron removal, with a particle size of ≤0.71mm ( 22 mesh sieve), mullite refractory kiln furniture waste clinker 30kg; cordierite refractory kiln furniture waste clinker 45kg;

[0036] (2) Composite matrix material is made up of materials with the followi...

Embodiment 2

[0037] Embodiment 2. A method for preparing energy-saving and highly thermal shock-resistant kiln structural materials by using waste refractory kiln furniture. The process includes:

[0038] (1) batching: prepare raw materials, batching by the method for embodiment 1;

[0039] (2) mixing ingredients, mixing and stirring the water of formula quantity and all materials;

[0040] (3) Vacuum mud refining, the material described in process (2) is stirred in a vacuum mud refining mixer, and the vacuum degree is less than or equal to 0.095Mpa;

[0041] (4) Extrusion molding, using a mold and a molding extruder to extrude molding;

[0042] (5) drying, the water content after drying is ≤1%;

[0043] (6) Firing, the product is crystallized and fired in a high-temperature furnace after drying, at a temperature of 1330°C-1410°C, and kept for 8-12 hours.