CN103382127A - Composite ceramic filter core and preparation method thereof - Google Patents

Abstract

The invention provides a composite ceramic filter core and a preparation method thereof. The composite ceramic filter core is prepared from 12 to 14 parts of diatomite, 36 to 38 parts of active carbon, 2 to 3 parts of a carbon nanotube, 1 to 2 parts of silver nitrate, 4 to 5 parts of coconut oil monoethanolamide, 7 to 9 parts of sodium metasilicate, 8 to 10 parts of propylene glycol, 3 to 5 parts of starch, 3 to 4 parts of ammonium bicarbonate, 20 to 25 parts of modified bentonite and a proper amount of water. The carbon nanotube used in the invention can improve mechanical properties of the ceramic filter core; meanwhile, the multiwalled carbon nanotube has a mesoporous structure and can effectively absorb and remove heavy metal ions in water. The composite ceramic filter core provided by the invention can be used for air filtration of an air-conditioning system, water filtration and inhalation filtration of an automobile filter and is applicable to a variety of places with a severe environment.

Description

A kind of composite ceramic filter core and preparation method thereof

Technical field

The invention belongs to the filtering material technical field, specifically a kind of composite ceramic filter core and preparation method thereof.

Background technology

The filtering material purposes is very extensive, is widely used in the industry such as chemical industry, electric power, metallurgy, oil, electronic apparatus, machinery; Modal have an air filter for automobile, is used for filtering the air that enters engine, and the mechanical impurity compositions such as airborne particulate matter, particulate are stopped, prevents that these compositions from entering in gasoline, diesel oil or machine oil, guarantees engine work.Also have a large amount of filtering materials to be used for air conditioning system, ambient atmosphere pollutes very serious now, greatly be detrimental to health, air filting material can be with the various deleterious particle thing absorption of air, prevent from entering people's life or Working environment, reduce the human lung to the suction of the objectionable impuritiess such as particulate matter, improve people's quality of life, reduce the generation of disease.Some is used for water filtration and sewage disposal, for separating of the heavy metal in water or objectionable constituent.Existing filtering material mainly contains ceramic honey comb, filter paper, woven wire etc.Existing honeycomb ceramic filter material feedstock is joined function singleness, can not satisfy the requirement of technology development.

Summary of the invention

The purpose of this invention is to provide a kind of composite ceramic filter core and preparation method thereof.

The technical solution adopted in the present invention is:

A kind of composite ceramic filter core is characterized in that being made by the raw material of following weight part:

Diatomite 12-14, gac 36-38, carbon nanotube 2-3, Silver Nitrate 1-2, Coconut Fatty Acid Monoethanolamide 4-5, Starso 7-9, propylene glycol 8-10, starch 3-5, bicarbonate of ammonia 3-4, modified alta-mud 20-25, water are appropriate.

Described modified alta-mud is made by following methods:

Wilkinite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into the 10-12% hydrochloric acid soln and soaked 2-3 hour, then put into the 10-12% sodium hydroxide solution and soaked 1-2 hour, take out, clean the oven dry grinding powder with pure water; Add again the aluminium nitride that is equivalent to wilkinite weight 35-40%, the Dogbane Leaf of 16-18%, the alum powder of 2-3%, the zeolite powder of 2-3%, the brown powdered sugar of 3-4%, mix and blend 30-40 minute, and then spray into and be equivalent to wilkinite weight 5-7%'s Linking agent TAC, stirred 40-50 minute under 12000-15000 rev/min, and get final product.

The preparation method of described composite ceramic filter core is characterized in that comprising the following steps:

Each mixing of materials is even, vacuum pugging, compression moulding, ageing was placed 4-6 hour, send into sintering processes in tunneled sintering kiln, after 420-450 ℃ of lower sintering 2-3 hour, be warming up to 650-680 ℃ with 6-8 ℃ of/minute clock rate, sintering 2-3 hour, then, be warming up to 1050-1080 ℃ of lower sintering 3-4 hour with 10-12 ℃ of/minute clock rate again, take out coolingly, send in the hydrochloric acid soln of 3-4% and soaked 3-4 hour, then, send in the potassium permanganate solution of 400-450ppm and soaked 2-3 hour, take out oven dry and get final product.

Carbon nanotubes of the present invention can improve the mechanical property of ceramic element; Multi-walled carbon nano-tubes has meso-hole structure simultaneously, can remove heavy metal ion in water by active adsorption.The present invention can be used for the air filtration of air conditioning system, also can be used for water filtration, can also be used for the air-breathing filtration of automobile filter, be applicable to various environment abominable places.

Embodiment

A kind of composite ceramic filter core, made by the raw material of following weight part (kilogram):

Diatomite 14, gac 38, carbon nanotube 2, Silver Nitrate 2, Coconut Fatty Acid Monoethanolamide 5, Starso 7, propylene glycol 10, starch 5, bicarbonate of ammonia 4, modified alta-mud 20, water are appropriate.

Described modified alta-mud is made by following methods:

Wilkinite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into the 10-12% hydrochloric acid soln and soaked 2-3 hour, then put into the 10-12% sodium hydroxide solution and soaked 1-2 hour, take out, clean the oven dry grinding powder with pure water; Add again the aluminium nitride that is equivalent to wilkinite weight 40%, 18% Dogbane Leaf, 3% alum powder, 3% zeolite powder, 4% brown powdered sugar, mix and blend 30-40 minute, and then spray into and be equivalent to wilkinite weight 7% Linking agent TAC, stirred 40-50 minute under 12000-15000 rev/min, and get final product.

The preparation method of composite ceramic filter core comprises the following steps:

Each mixing of materials is even, vacuum pugging, compression moulding, ageing was placed 4-6 hour, send into sintering processes in tunneled sintering kiln, after 420-450 ℃ of lower sintering 2-3 hour, be warming up to 650-680 ℃ with 6-8 ℃ of/minute clock rate, sintering 2-3 hour, then, be warming up to 1050-1080 ℃ of lower sintering 3-4 hour with 10-12 ℃ of/minute clock rate again, take out coolingly, send in the hydrochloric acid soln of 3-4% and soaked 3-4 hour, then, send in the potassium permanganate solution of 400-450ppm and soaked 2-3 hour, take out oven dry and get final product.

Sample main technical details of the present invention is: heat shock resistance: 950 ℃-20 ℃ air-cooled does not once split; 1250 ℃ of maximum operation (service) temperatures.The technical indicator of exhaust gas purification and treatment device is: process 550 ℃ of gas top temperatures; Capture micronic dust efficient 〉=99%; Outlet discharging soot dust granule substrate concentration≤30mg/m3; The dust granules minimum grain size scope 1-10 μ mm that catches.

Claims (2)

1. composite ceramic filter core is characterized in that being made by the raw material of following weight part:

Diatomite 12-14, gac 36-38, carbon nanotube 2-3, Silver Nitrate 1-2, Coconut Fatty Acid Monoethanolamide 4-5, Starso 7-9, propylene glycol 8-10, starch 3-5, bicarbonate of ammonia 3-4, modified alta-mud 20-25, water are appropriate;

Described modified alta-mud is made by following methods:

Wilkinite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into the 10-12% hydrochloric acid soln and soaked 2-3 hour, then put into the 10-12% sodium hydroxide solution and soaked 1-2 hour, take out, clean the oven dry grinding powder with pure water; Add again the aluminium nitride that is equivalent to wilkinite weight 35-40%, the Dogbane Leaf of 16-18%, the alum powder of 2-3%, the zeolite powder of 2-3%, the brown powdered sugar of 3-4%, mix and blend 30-40 minute, and then spray into and be equivalent to wilkinite weight 5-7%'s Linking agent TAC, stirred 40-50 minute under 12000-15000 rev/min, and get final product.

2. the preparation method of composite ceramic filter core according to claim 1 is characterized in that comprising the following steps:

Each mixing of materials is even, vacuum pugging, compression moulding, ageing was placed 4-6 hour, send into sintering processes in tunneled sintering kiln, after 420-450 ℃ of lower sintering 2-3 hour, be warming up to 650-680 ℃ with 6-8 ℃ of/minute clock rate, sintering 2-3 hour, then, be warming up to 1050-1080 ℃ of lower sintering 3-4 hour with 10-12 ℃ of/minute clock rate again, take out coolingly, send in the hydrochloric acid soln of 3-4% and soaked 3-4 hour, then, send in the potassium permanganate solution of 400-450ppm and soaked 2-3 hour, take out oven dry and get final product.