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Titanium white gypsum suspension solid-liquid separation and hot-pressing drying equipment and production process thereof

A technology of solid-liquid separation and drying equipment, applied in the field of titanium dioxide gypsum suspension solid-liquid separation and titanium white gypsum deep dehydration, which can solve the problems of increasing drying cost and achieve the effect of simple process

Inactive Publication Date: 2016-04-20
武汉青江化工黄冈有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used equipment includes paddle dryers, sleeve machines, fluidized beds, rotary kilns, flash evaporation and other drying forms. This drying method with heat exchange greatly increases the drying cost

Method used

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  • Titanium white gypsum suspension solid-liquid separation and hot-pressing drying equipment and production process thereof
  • Titanium white gypsum suspension solid-liquid separation and hot-pressing drying equipment and production process thereof
  • Titanium white gypsum suspension solid-liquid separation and hot-pressing drying equipment and production process thereof

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Experimental program
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Effect test

Embodiment 1

[0039] The titanium dioxide gypsum suspension hydraulic filtration-hot press dehydration system and process of the present invention are used to process titanium gypsum data as follows:

[0040] Single processing capacity: equipped with a filtration area of ​​120m2 - hot pressing dehydration integrated equipment system and process The feeding time is 60 minutes, mechanical pressing is 10 minutes, then the drying plate is heated, hot pressing is 10 minutes, and the material is automatically unloaded In 5 minutes, about 8 tons of titanium gypsum can be obtained.

[0041] Heat source: low-pressure steam with a pressure of 1-2 kg.

[0042] Single cycle running time: 90 minutes.

[0043] Processing scale: 2050 cubic meters of suspension containing 5% titanium gypsum can be processed within 24 hours of operation, and about 128 tons of titanium gypsum can be processed.

[0044] Titanium gypsum free moisture: 21.6%.

Embodiment 2

[0046] The titanium dioxide gypsum suspension hydraulic filtration-hot press dehydration system and process of the present invention are used to process titanium gypsum data as follows:

[0047] Single processing capacity: Equipped with a filtration area of ​​120m2 pressure filter-hot press dehydration integrated equipment system and process The feeding time is 60 minutes, mechanical pressing is 10 minutes, and then the drying plate is heated, hot pressing for 15 minutes, automatic unloading The material time is 5 minutes, and about 8 tons of titanium gypsum can be obtained.

[0048] Heat source: low-pressure steam with a pressure of 1-2 kg.

[0049] Single run time: 95 minutes

[0050] Processing scale: 24 hours of operation time can process 1800m3 of 5% titanium gypsum suspension, and about 120 tons of titanium gypsum can be obtained.

[0051] Titanium gypsum free moisture: 15.6%.

Embodiment 3

[0053] The titanium dioxide gypsum suspension hydraulic filtration-hot press dehydration system and process of the present invention are used to process titanium gypsum data as follows:

[0054] Single processing capacity: The system and process equipped with a dehydration and drying integrated equipment with a filtration area of ​​120m2 have a feeding time of 60 minutes, mechanical pressing for 10 minutes, then heating the drying plate, hot pressing for 15 minutes, and automatic unloading time for 5 minutes Minutes, about 8 tons of titanium gypsum can be obtained.

[0055] Heat source: heat conduction oil at 110-130°C.

[0056] Single run time: 90 minutes

[0057] Processing scale: 1800m3 of suspension containing 5% titanium gypsum can be processed within 24 hours of operation time, and 120 tons of titanium gypsum can be obtained.

[0058] Titanium gypsum free moisture: 17.5%.

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Abstract

The invention discloses titanium white gypsum suspension solid-liquid separation and hot-pressing drying equipment and a production process thereof, and solves the problems of single function, filter press plate deformation after long-term use and the like in the prior art. The equipment and the process are characterized in that: mechanical filter pressing and heating are combined, first a hydraulic system and a two-sided elastic water permeable plate are utilized to conduct filter pressing on a suspension so as to realize solid-liquid separation of the suspension, the solid material forms a filter cake in a filter chamber, when feeding is stopped, a heat source is employed to heat a drying plate clinging to the material, moisture in the compact material clinging to the drying plate is vaporized under heating, the volume increases, the generated driving force squeezes the non-vaporized material moisture out of one side of the water permeable plate, at the same time the elastic water permeable plate timely compresses the volume vacated due to moisture decrease under the action of the hydraulic system, thus realizing deep dewatering and drying of the filter cake within a short period of time. The equipment and the process provided by the invention combine mechanical filter pressing and heating drying, and improve the heat efficiency. The equipment provided by the invention has the advantages of small land occupation and low energy consumption, and existing plate and frame type filtration equipment can be transformed into high elasticity hot-pressing drying equipment.

Description

technical field [0001] The invention belongs to the technical field of solid-liquid separation of titanium white gypsum suspension and the field of deep dehydration of titanium white gypsum, and in particular relates to an integrated equipment for solid-liquid separation and hot-press dehydration of titanium white gypsum suspension and a production process thereof. Background technique [0002] Titanium white gypsum is an industrial by-product gypsum produced by the sulfuric acid method. For every ton of titanium dioxide produced, about 8-10 tons of titanium white gypsum are produced by-product, and the adsorption water is between 50-60%. At present, the utilization rate of titanium gypsum in China is extremely low, and the by-product titanium gypsum produced by titanium dioxide enterprises is disposed of by stacking and landfilling. The total annual output of titanium gypsum in my country reaches 13 million tons. Calculated on the basis of a compacted bulk density of 1.3t / ...

Claims

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Application Information

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IPC IPC(8): B01D25/12B01D25/28B01D37/02B09B3/00
CPCB01D25/12B01D25/284B01D37/02B09B3/00B09B3/40
Inventor 欧阳兆辉周建锋张恒明金友谊简理陈扬
Owner 武汉青江化工黄冈有限公司
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