Cast Iron Filter Press

As the name implies, the filter press is made of high-quality cast iron and is suitable for filtering high-temperature materials. It consists of a series of horizontally designed chambers arranged in parallel.

Overview of Cast Iron Filter Press:

As the name implies, the filter press is made of high-quality cast iron and is suitable for filtering high-temperature materials. It consists of a series of horizontally designed chambers arranged in parallel. The chambers consist of stacked filter plates, each with filter cloth or other suitable filter media. The plate stack is usually compressed by a hand wheel or electric hydraulics, and the filter cloth is used as a gasket between the individual chambers.

Cast iron filter presses are available in both manual and automatic types. Since cast iron filter plates are very heavy, we would recommend an automatic cast iron filter press if the size of the filter plate exceeds 630mm. It is recognized in various fields for its high strength, reliability and long service life.

  • Filter plate material
  • Filter media
  • Pretreatment

Currently, the filter plate of filter press is made of polymer or polymer coated steel. According to the needs, the filter plate can also choose cast iron or stainless steel materials, which provide a good drainage surface for the filter cloth. The size range of the filter plate is 250 ×250 mm to 2.0 × 2.0 meters, and larger or smaller sizes are available.

Filter press usually uses filter cloth as filter medium, which is made of polypropylene filter cloth, non-woven fabric, cotton cloth, etc. filter paper board, cotton pulp board or filter membrane can also be used as filter medium as required. Generally, the cake thickness of plate and frame filter press can reach 50 mm, but in extreme cases, it can be increased to 200 mm. The box filter press (concave filter press) can form a filter cake with a thickness of 30-40mm.

Before using the filter press for filtration, if the solid suspension has precipitated, the mixed liquid needs to be pretreated, which can improve the performance of the filter press because it increases the porosity of the filter cake, thus speeding up the filtration speed. The size of floc can be controlled by changing temperature, concentration and pH value. In addition, if the filter cake is impermeable and not conducive to the flow of filtrate, filter aids can be added in the pretreatment process to increase the porosity of the filter cake, reduce the resistance of the filter cake and obtain a thicker filter cake. However, the filter aid needs to be able to be removed from the filter cake by physical or chemical treatment. A common filter aid is diatomite, with a porosity of 0.85.

Main features of cast iron filter press:

1. Widely used in high-temperature dehydration of various oil products (motor oil, vegetable oil, etc.)
2. The filter plate and frame is made of high-quality cast iron or ductile iron. Used for high-temperature filter materials, high pressure resistance and long service life.
3. Maximum temperature: up to 300 degrees Celsius
4. Maximum overall dimensions of the filter plate: 1130*1130mm
5. There are two types of filter plates: chamber type and plate-frame type, which can meet different filtering needs

 

Application of cast iron filter press:

Concentrate processing, industrial minerals, metallurgical processing, chemical processing, food and pharmaceutical industries, waste oil recovery, etc.

 

Optional configurations for cast iron filter press:

1.Auto bomb door system : It is used to collect liquid leaked from filter cloth and filter plate to avoid contaminating the construction site. It can also prevent the filter cake from getting wet.
2.Mud collection cart: The material is usually carbon steel or stainless steel. The bottom is equipped with universal wheels for easy movement. Placed under the filter plate of a small filter press, it can be used to collect filter cakes for easy transportation.
3.Sludge storage bucket : Used to collect the filter cakes removed after filtration for easy transportation. The opening methods are divided into electric and pneumatic.
4. Belt conveyor: Used to transport the discharged filter cake, it is placed under the filter press to transport the filter cake to the designated location, thereby reducing labor intensity.

Technical data of cast iron plate and frame type / chamber type filter press with plate size of 320,450/630/800mm:

Type Filter area (m2) Filter plate size (mm) Cake thickness (mm) Chamber volume (L) Plate number (PCS) Frame number (PCS) Filtrating pressure (MPa) Dimensions (mm)(L×W×H)
BQ1/320-25 1 320 x 320 25 13 4 5 1 1150×760×650
BQ2/320-25 2 25 9 10 1390×760×650
BQ3/320-25 3 38 14 15 1750×760×650
BQ4/450-25 4 450 x 450 25 51 9 10 0.8 1780×760×650
BQ6/450-25 6 76 14 15 2055×870×880
BQ8/450-25 8 102 19 20 235×870×880
BQ12/450-25 12 152 29 30 2785×870×880
BQ16/450-25 16 203 39 40 3305×870×880
XQ4/450-25 4 450 x 450 25 51 9 1 1900×870×880
XQ6/450-25 6 76 14 2030×870×880
XQ8/450-25 8 102 19 2280×870×880
XQ12/450-25 12 152 29 2780×870×880
XQ16/450-25 16 203 39 3280×870×880
BQ20/630-25 20 630 x630 25 298 24 25 0.6 2750×1150×1100
BQ30/630-25 30 452 37 38 3220×1150×1100
BQ40/630-25 40 295 49 50 3870×1150×1100
BY20/630-25 20 298 24 25 2960×1150×1100
BY30/630-25 30 452 37 38 3610×1150×1100
BY40/630-25 40 595 49 50 4210×1150×1100
XQ20/630-25 20 25 248 24 0.8 2600×1100×1100
XQ30/630-25 30 377 37 3250×1100×1100
XQ40/630-25 40 496 49 3900×1100×1100
XY20/630-25 20 248 24 2950×1100×1100
XY30/630-25 30 377 37 3580×1100×1100
XY40/630-25 40 496 49 4180×1100×1100
BY40/800-25 40 800 x 800 25 496 30 31 0.6 3550×1380×1300
BY50/800-25 50 624 38 39 3970×1380×1300
BY60/800-25 60 752 46 47 4420×1380×1300
BY70/800-25 70 880 54 55 5320×1380×1300
BY80/800-25 80 1008 62 63 3500×1380×1300
XY40/800-25 40 25 595 30 0.8 3720×1380×1300
XY50/800-25 50 749 38 3950×1380×1300
XY60/800-25 60 902 46 3950×1380×1300
XY70/800-25 70 1056 54 4180×1380×1300
XY80/800-25 80 1210 62 4400×1380×1300

 

Technical data of cast iron chamber type automatic filter press 800-1200mm:

Type Filter area (m2) Plate size
(mm)
Cake thickness
 (mm)
Chamber volume
 (L)
Plate number
(PCS)
Filtrating pressure (MPa) Weight (kg) Dimensions (mm)
(L×W×H)
XZ50/800-30 50 800 x 800 30 730 38 0.8 9000 4170×1300×1300
XZ60/800-30 60 883 46 10800 4560×1300×1300
XZ70/800-30 70 1036 54 12000 4960×1300×1300
XZ80/1000-30 80 930x930 1194 45 13800 4775×1400×1400
XZ90/1000-30 90 1323 51 15500 5245×1400×1400
XZ100/1000-30 100 1479 57 16800 5915×1400×1400
XZ80/1200-30 80 1130x1130 1226 31 17600 4100×1620×1520
XZ90/1200-30 90 1379 35 18800 4340×1620×1520
XZ100/1200-30 100 1532 39 20800 4580×1620×1520
XZ120/1200-30 120 1838 47 23500 5060×1620×1520
XZ150/1200-30 150 2300 59 27500 5780×1620×1520
XZ180/1200-30 180 2758 71 31500 6500×1620×1520

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