Instructions for using acid resistant cement
purpose:
1. This cement can be applied in chemical, petroleum, metallurgy, machinery, papermaking, sugar productionPesticidesProduction equipment in textile and other industries that is resistant to corrosion from sulfuric acid, hydrochloric acid, nitric acid, chlorine gas, sulfur dioxide, sulfur trioxide, formic acid, oxalic acid, boric acid, chromic acid, etcAnd in mixtures of various media mentioned aboveOn equipment foundations, acid storage tanks, pickling tank workshop floors, and trenches that are corroded by acidElectrolytic cellIt can be used in buildings with chimney linings that have gas corrosion, and can be used to prepare acid resistant mud masonry acid resistant brick boards, etc; Can be mixed with acid resistant coarse aggregate(stone)Acid resistant fine aggregate(sand)Prepare acid resistant concrete.
2. This product is not suitable for use with hydrofluoric acid or fluorosilicic acid,300Engineering involving the corrosion of hot phosphoric acid, higher fatty acids, oleic acid, palmitic acid, and alkaline liquids or salts above ℃, as well as equipment engineering involving long-term immersion in water.
characteristic:
ACID PROOF CEMENTS(Water glass type)A powdery material made by grinding acid resistant fillers and hardeners in an appropriate ratio. After mixing with an appropriate amount of water glass solution during use, it can harden in the air and has the ability to resist corrosion from most inorganic and organic acids.
usage:
1. Before the construction of carbon steel equipment, the surface should be sandblasted for rust removal. For concrete equipment, the surface dust should be cleaned and uneven parts should be trimmed. The water content of concrete constructed tanks and pools should be less than 6%.
2. The acid resistant brick boards and granite surfaces used for lining should be clean and dry.
3. The containers and utensils used for mixing adhesive should be clean and dry,When using, the product should be placed in a container first, and then the water glass solution should be added. The stirring should be uniform and rapid, generally less than each time10kgIt is advisable to mix it together, and each time the adhesive is mixed, it needs to be30minAfter internal use, the tools and containers used must not contain moisture or other impurities. When bonding acid resistant silicon, attention should be paid to staggered jointsThe application of adhesive should be full and compacted firmly. The adhesive should be squeezed out of the brick joints and excess adhesive should be scraped off with a scraper. The bonding layer and joints are generally 3-5mm. When lining large acid resistant bricks, support and fixation should be provided to prevent the bricks from moving.
4Whether it's mixing cement or acid resistant concrete, specific gravity must be used1.38~1.45, modulus2.6~2.8Mixing of water glass solution between them(It is strictly prohibited to use water for mixing)The dosage is usually for solid materials38%~45%between.
5The construction of acid resistant cement should be carried out in20~30Under the condition of ℃,The relative temperature should not exceed 80%, when the ambient temperature is below15℃Heating and insulation measures should be taken.During construction, measures must be taken to prevent water, rain, sun, and sudden temperature changes. Maintain in the air10~20about(Winter lasts longer)During the maintenance period, avoid contact with steam, water, etc., and do not expose to direct sunlight to prevent cracking. If there are cracks, repair them immediately. Not allowed10Construction in environments below ℃,Rainproof and sun proof sheds should be built for outdoor construction.
6Maintain and dry5~10Acidification treatment should be carried out after day and night, and the method is to40%Apply sulfuric acid to its surface, every4honce. The crystals that precipitate each time should be scraped off before the next coating until there are no crystals precipitated. Generally requires painting4Next time. After acidification treatment, it can be delivered for use.
7. After construction is completed, the normal maintenance time is 15-20 days in summer and 25-40 days in winter.
KPI Technical indicators for acid and heat resistant adhesive powder
performance |
TECHNICAL INDEX |
appearance |
Grey powder, no lumps |
granularity |
40-240 mesh |
Acid resistance (%) |
≥95 |
Moisture content (%) |
≤1.0 |
Heat resistance limit temperature(0c) |
(KPI)300-900 |
Acid resistant mastic, acid resistant mortar, acid resistant concretemix proportion
Material name |
appearance |
water content |
Maximum particle size of the mixture (mm) |
MixtureAdded(Quality ratio) |
|||
KP liquid |
KP adhesive mixture |
KP mortar mixture |
KP concrete mixture |
||||
KP adhesive |
Grey white with black powder without clumping |
(1%) |
0.45 |
100 |
220-270 |
---- |
---- |
KP mortar |
Gray white or gray black powder without clumping |
(1%) |
1.25 |
100 |
220-270 |
8090 |
---- |
2.50 |
100 |
220-270 |
120150 |
---- |
|||
5.00 |
100 |
220-270 |
220-230 |
---- |
|||
KP concrete |
Gray white or gray black |
(1%) |
10.00 |
100 |
220-270 |
---- |
280330 |
25.00 |
100 |
220-270 |
---- |
380480 |
|||
40.00 |
100 |
220-270 |
---- |
480540 |
Note: (1) When preparing KPM type materials, KPM type mixtures should be used.
(2) When preparing KP-1 and KP-2 materials, a mixture of KP-1 and KP-2 should be used.
sodium silicateLiquid technical indicators:
Material name |
appearance |
modulus |
proportion |
KP-1、KP-2 |
Grey white viscous liquid |
2.6-2.8 |
1.40-1.46 |
KPM |
Grey white viscous liquid |
2.7-2.9 |
1.42-1.46 |
The curing period of KP series materials
Material name |
Maintenance period (d) |
||
15-200c |
21-300c |
31-350c |
|
KPM material |
28 |
15 |
8 |
KP-1 and KP-2 materials |
14 |
8 |
4 |
Note: 1Thickness greater than60mmofKPThe curing period of concrete should be extended3d.
2Large volumeKPThe protection period of cast-in-place concrete engineering should be increased6d.
3Well mixedKPIt is strictly prohibited to add powder or other materials during the construction of the series of materialsKPLiquid, if foundKPClass materials that have hardened should be discarded and not usedKPMConcrete should be mixed using a forced mixer.
General distributor: Chengdu Sante Fiberglass Anti corrosion Technology Co., Ltd
Factory Address: Yongxing Guishan, Xinjin County, Chengdu City
Phone: