Construction Technology of Refractory Castable

1. Ready

Before the construction, check the mixing equipment, transport tools, vibrating tools and pouring parts to be intact, clean the situation; check the template, the surrounding refractory bricks and insulation layer of water loss measures; check equipment rust, anchor, anchor Brick form, size, arrangement, welding quality and expansion of metal anchors compensation measures; check the quality of castables and construction water is in line with the requirements. In addition, the castable during construction, to ensure that no power failure, without interruption of construction.

2. Stir

(1) should use forced mixer mixing.Blender to be clean and rinse in advance, shall not be mixed with lime, sediment, Portland cement and other sundry.

(2) according to agitator specification size and construction of quantitative, mixing amount every time shoulds not be more than 200 kg.In regulation water situation, must make mixing castable enough fluidity.

(3) the castable components into agitator, dry mixing 3 min, then clean tap water.When water, first add castable reference plus 90% of the water, then slowly add the remaining water slurry liquidity to meet requirements of wet mixing time shall not be less than 5 min.

(4) pouring material must be the whole cylinder use the whole bag.Blended castable shall promptly carry out pouring, from the water, must be used up within 30 minutes.Has initial setting of wet material, and may not force shaping, can't again stir water reuse.

3. Vibration

(1) model is tight, fight slurry.The castable as soon as possible in the box with with a vibrator layered vibrated, each layer thickness is no more than 300 mm, vibration spacing with 250 mm advisable.

(2) vibration, to avoid touching the anchoring parts, shall not damage the insulation, stay castable pan pulp, most of the bubble surface, extract a vibrator slowly after discharge.

(3) pouring should be continuous.Before a layer castable before initial setting, should be in a timely manner after the construction of a layer castable.If construction more than initial setting time interval, the processed according to the requirements of construction joints.

4. Maintenance

(1) of cement castable, after being castable surface drying, immediately with plastic cover tightly or straw bag will dew in the air part.But to the chemical combination of castable doesn't have to cover the surface.

(2) the final set, the castable templates can be removed.But bearing plate can be removed after strength reached 70%.

(3) refractory castable curing temperature should be between 10 to 35 ℃.Temperature is too high, hydration products will be transformed into C3AH6, may lead to strength decrease;The temperature is too low, the hardening of the delay.

Introduction of our company

Gongyi Taurus Refractory Material Factory is a professional refractory materials manufacturers and refractory materials suppliers,mainly supply Unshaped Refractories,Silicon Carbide Refractory Castable,Castable Refractory Cement,Pouring Material,Castable Refractory Concrete,Silica Ramming Mass etc. series of refractory materials products, sincerely welcome everyone to visit.

Contact information

Contact: Mr. Niu
Tel: +86-371-64372566
Fax: +86-371-64372588
Whatsapp: +86-15137151612
Mobile Phone: +86-15137151612
Email: info@jnrefractory.com
          gyjinniu@163.com

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