CN1054382A

CN1054382A - Opal filter aid production method and product

Info

Publication number: CN1054382A
Application number: CN 91101831
Authority: CN
Inventors: 冯雨春
Original assignee: Geologic Survey Team Of Region No 1 Geology And Mineral Bureau Heilongjiang P
Current assignee: Geologic Survey Team Of Region No 1 Geology And Mineral Bureau Heilongjiang P
Priority date: 1991-03-20
Filing date: 1991-03-20
Publication date: 1991-09-11
Anticipated expiration: 2006-03-20
Also published as: CN1023975C

Abstract

A kind of production method of opal filter aid and product, the opal rock dust is broken to 105～3um, add sodium chloride, borax, fluxs such as sodium acid carbonate, NaOH and calcium carbonate are made this filter aid filtering velocity height at 750～1100 ℃ of temperature lower calcinations, the filter aid use amount is few, filter quality is good, and the scope of application is wide, and cost is low.

Description

Opal filter aid production method and product

The present invention relates to the production method of opal filter aid and opal filter aid.

At present, the filter aid of domestic and international application has super-cell, the expanded perlite filter aid, and cellulose filter aid and carbon element filter aid etc., wherein super-cell is widely used, and its chemical stability is good, and various filter-aid performances are also relatively good.But the raw material diatom grogs degree of super-cell is generally 5～40 μ m, contain more fine powder, must at high temperature calcine the subparticle local melting is sticked together if will obtain bigger solids, could be as filter aid, Gu energy resource consumption is bigger.And the diatom aggregate is earthy, the low rate of filtration that influences of compression strength.

The objective of the invention is to utilize that widely distributed, reserves are abundant, the opal rock is produced filter aid cheaply, this filter aid performance is better than super-cell, and cost is low, and the scope of application is wide, and rationally uses the opal rock.

Technical solution of the present invention is to realize like this.The opal rock just is broken to stone less than 10 centimetres, further be crushed to afterwards granularity 105～3 μ m(wherein the negative 33 μ m particle weight of granularity be not less than 15%), be heated to after 750～1000 ℃, this temperature lower calcination 1～4 hour, be cooled to normal temperature, the particle of removing greater than 105 μ m through whole grain is opal filter aid.

Method of the present invention adds some fluxs in order further to improve the filter aid performance.Get the sodium chloride of opal weight 1～7%, 0.5～4% NaOH and 0.5～30% water are mixed and spray in the albumen stone flour, dose the Paris white (being crushed to granularity less than 33 μ m) of opal grain weight amount 2～18% again.Perhaps getting the sodium chloride of opal grain weight amount 1～7% and 20～30% water is mixed, spray in the albumen stone flour, the Paris white of dosing opal grain weight amount 2～18% again stirs, be heated to 800～1100 ℃, this temperature lower calcination 1～4 hour, be cooled to normal temperature, the particle of removing greater than 105 μ m through whole grain is opal filter aid flux calcination product.

The opal rock is distributed in the middle of strong colcanism and gives birth in the band basin, and distribution is all arranged both at home and abroad.The opal rock do the filter aid raw material use should satisfy contain that silica is not less than 80%, alundum (Al is not more than 8%, di-iron trioxide is not more than 3.5%, ore body weight is less than 1.3 tons/m ³, specific area is greater than 60m ²/ gram, pore volume is greater than 0.25 gram/cm ³

Also contain oxides such as a spot of potassium, sodium, calcium, magnesium, phosphorus, manganese, titanium in the opal rock.The opal rock is granular, the bobbles shape of hollow thorniness, netted, cloud structure (seeing electromicroscopic photograph) at the electron microscope pattern.It has low unit weight, bigger serface, and suitable hardness, compression strength, frictional force and index of refraction are arranged, and dioxide-containing silica is high and have chemical inertness, therefore is well suited for the manufacturing filter aid.

With the purpose of opal rock calcining to 105～3 μ m in small, broken bits is to remove organic and flammable impurity, increases surface-active.The particle of negative 33 μ m granularities can be removed the solids greater than 4 μ m greater than 15% o'clock in the opal fine powder, and negative 33 μ m particles then were difficult to remove the solids of 4 μ m less than 15% o'clock in the opal particulate.

Method of the present invention adds sodium chloride can make the vitrifying of albumen stone flour melt surface, makes di-iron trioxide enter glassy phase and reaches the chemically stable state; NaOH makes the opal surface dissolution and vitreous, makes the filter aid smooth surface increase the rate of filtration; Adding borax increases the product surface activity, reduces firing temperature, increases filter aid intensity; Add sodium acid carbonate and can reduce the filter aid superficial density; Calcium carbonate increases absorption property.

Filter aid of the present invention relatively has the following advantages with super-cell:

1, filter aid rate of filtration height of the present invention, the filter aid use amount is few, and filter quality is good.Ooze rate analyzer mensuration with the vacuum suction filter type and ooze the rate result, U.S.'s super-cell flux calcination product ooze 4.2 liters/m of rate ²Divide, opal filter aid flux calcination product ooze 8.56 liters/m of rate ²Divide, this filter aid rate of oozing exceeds more than a times of the U.S..Use German Cai Shi plate and frame filtering agent, last marine products filter board that the rate of oozing, turbidity, the precoating amount of water and beer etc. are done industrial analog reslt such as following table 1:

It can be seen from the table make standard with U.S.'s product super-cell flux calcination product and dry product with proportioning precoating in 1: 1 under the same conditions, the opal filter aid water permeation rate exceeds U.S.'s super-cell 30%; Exceed homemade filter aid 50%; The beer turbidity is up to standard, and under the condition that saccharomycete can't check, beer filtration speed exceeds U.S.'s filter aid 37%, exceeds homemade filter aid 73%.

2, method of the present invention can be produced the product of any size distribution as required, filter aid compression strength height, therefore this filter aid is applicable to the outer high density preferably of filtration of general filtrates such as beer, the filtration of high viscosity filtrate, as the filtration of the dark beer of the high number of degrees, liquid glucose, gelatine etc.

3, the super-cell cost is 2116 yuan/ton, and this filter aid cost is 1656 yuan/ton, and cost reduces by 30%.

4, this filter aid raw material opal rock distributes extensively, is easy to get, and cost is low.

Further specify technical solution of the present invention in conjunction with example 1:

Example 1

1, with below jaw crusher the 10cm that the opal rock dust is broken.

2, again with the ring roller pulverizer (940 rev/mins of 4R4216 pendulum type ring roll pulverizer analytical engine revolutions) with opal be crushed to less than 105 μ m(wherein 33 μ m granularities greater than 18%).

3, get 500 kilograms of opal rock dust and send in the single channel flame-insulating type coal firing tunnel kiln, preheating reached 750 ℃ of temperature lower calcinations 4 hours in two hours, was cooled to normal temperature then.

4, cross aperture 105 μ m sieve and remove, get 425 kilograms of filter aids greater than 105 μ m particles.

Example 2

Get to be crushed to and spray the solution that mixes by 35 kilograms of industrial sodium chloride, 15 kilograms of NaOH, 15 kilograms of boraxs and 150 kg of water less than the opal rock dust of 105 μ m 500 kilograms (containing 33 μ m particle 75kg), send into tunnel cave after mixing evenly with mixer and be heated to 1100 ℃, this temperature lower calcination 1.5 hours, be cooled to normal temperature, cross aperture 105 μ m sieve 420 kilograms of filter aids.

Example 3

Get 500 kilograms of the opal rock dust (containing 33 μ m particle 75kg) that are crushed to less than 105 μ m, the solution that sprinkling is made by 10 kilograms of sodium acid carbonates and 100 kg of water, add 90 kilograms of Paris whites (being crushed to granularity) again less than 33 μ m, with mechanical agitation evenly after, send into tunnel cave and be heated to 900 ℃, be cooled to normal temperature in 3 hours at this temperature lower calcination, cross aperture 105 μ m sieve 450 kilograms of filter aids.

Example 4

Get and be crushed to less than 500 kilograms of 105 μ m opal rock dust (containing 33 μ m particle 100kg), the solution that sprinkling is made by 5 kilograms of sodium chloride, 2.5 kilograms of boraxs and 100 kg of water, add 10 kilograms of Paris whites again, send into tunnel cave after mixing thoroughly with machinery and be heated to 800 ℃, this temperature lower calcination 4 hours, be cooled to normal temperature, cross 420 kilograms of filter aids of aperture 105 μ m sieve.

The opal lithification composition SiO that above-mentioned example uses ₂82.08%, Al ₂O ₃6.86%, Fe ₂O ₃1.41%, FeO 0.52%, CaO 0.69%, MgO 0.66%, K ₂O 0.98%, Na ₂O 0.31%, P ₂O ₅0.125%, MnO 0.025%, loss on ignition 6.04%, opal sillar degree 5～40cm, 1.3 tons/m of body weight ³, specific area 120m ²/ g, pore volume 0.40cm ³/ g.

The product specific area that above-mentioned example obtains, proportion DIGISORO 2500 Instrument measurings, 200 ℃ of treatment conditions, 4hr, vacuum 10 ^-4, adsorption isotherm OET, test condition N ₂Adsorption surface area is measured with SET, and sanitary standard is surveyed by provincial sanitary monitoring test, its result such as table 2:

Present embodiment 1 obtains filter aid machinery grain and distributes with the strong method detection of standard screen result such as table 3:

Claims

1, operation such as just broken, in small, broken bits, the calcining of a kind of warp method of producing opal filter aid, it is characterized in that the opal rock just is broken to stone less than 10 centimetres, further be crushed to granularity 105～3 μ m (wherein the negative 33 μ m particle weight of granularity are not less than 15%) afterwards, be heated to after 750～1000 ℃ this temperature lower calcination 1～4 hour, be cooled to normal temperature, the particle of removing greater than 105 μ m through whole grain is the opal filter aid dry product.

2, the method for claim 1, the sodium chloride, 0.5～4% NaOH, 0.5～3% borax and 20～30% the water that it is characterized in that getting opal rock dust weight 1～7% are mixed, spraying into stirs in the albumen stone flour is heated to 800～1100 ℃ afterwards, this temperature lower calcination 1～4 hour, be cooled to normal temperature, the particle of removing greater than 105 μ m through whole grain is opal filter aid flux calcination product.

3, the method for claim 1, it is characterized in that getting the sodium acid carbonate of opal grain weight amount 0.5～4% and 20～30% water is mixed and sprays in the albumen stone flour, dose again and be heated to 800～1100 ℃ after opal grain weight amount 2～18% Paris whites (being crushed to granularity less than 33 μ m) stir, this temperature lower calcination 1～4 hour, be cooled to normal temperature, remove greater than the particle of 105 μ m through whole grain.

4, the method for claim 1, it is characterized in that getting the sodium chloride of opal grain weight amount 1～7% and 20～30% water is mixed, sprays in the albumen stone flour, the Paris white of dosing opal grain weight amount 2～18% again stirs, be heated to 800～1100 ℃, this temperature lower calcination 1～4 hour, be cooled to normal temperature, remove greater than the particle of 105 μ m through whole grain.

5, a kind of opal filter aid is characterized in that the product of producing with claim 1 or 2,3 or 4 method.