Kieselguhr-based ferric carbon ceramsite packing and preparation method thereof

A technology of diatomite and iron carbon, which is applied in the field of water treatment, can solve problems such as passivation and hardening, and achieve the effects of simplifying operations, improving reaction efficiency, and reducing labor intensity

Inactive Publication Date: 2016-09-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a diatomite-based iron-carbon ceramsit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] The preparation method of the diatomite-based iron-carbon ceramsite filler is specifically implemented according to the following steps:

[0026] Step 1. Pass iron filings, activated carbon powder and diatomaceous earth through a 100-mesh sieve, and prepare starch into an aqueous solution with a concentration of 5% by mass;

[0027] Step 2: Mix iron filings, activated carbon powder, diatomaceous earth and ammonium sulfate and starch solution uniformly, and the mass ratio of iron filings, activated carbon powder, diatomaceous earth, and ammonium sulfate is 9.5-13:2.25-2.5:12-16: 1. The mass ratio of starch to ammonium sulfate in the starch solution is 1:3~4, and the mixture is pressed into a mud cake;

[0028] Step 3. The mud cake obtained in step 2 is sent to a granulator to make spherical fillers with a diameter of 10-15 mm, and then the spherical fillers are put into an atmosphere furnace, and nitrogen is introduced as a protective gas, and burned at 400-600°C In 30-60 minu...

Example Embodiment

[0029] Example 1

[0030] (1) Material preparation

[0031] The iron filings, activated carbon powder and diatomaceous earth are screened through a 100-mesh fine sieve to remove larger particles; starch is formulated into an aqueous solution with a mass percentage concentration of 5%;

[0032] (2) Mixing and cake making

[0033] Mix the sieved iron filings, activated carbon powder, diatomaceous earth, ammonium sulfate and starch solution evenly, wherein the mass ratio of iron filings, activated carbon powder, diatomaceous earth and ammonium sulfate is 13:2.5:16:1, starch solution The mass ratio of starch content to ammonium sulfate is 1:3, and the mixture is pressed into mud cake;

[0034] (3) Granulation

[0035] Send the mud cake to the granulator to make spherical packing with a diameter of 10-15mm;

[0036] (4) Burn

[0037] The spherical filler is put into an atmosphere furnace, and nitrogen is introduced as a protective gas, and then burned at 600° C. for 30 minutes to form spherica...

Example Embodiment

[0040] Example 2

[0041] (1) Material preparation

[0042] The iron filings, activated carbon powder and diatomaceous earth are screened through a 100-mesh fine sieve to remove larger particles; starch is formulated into an aqueous solution with a mass percentage concentration of 5%;

[0043] (2) Mixing and cake making

[0044] Mix the sieved iron filings, activated carbon powder, diatomaceous earth, ammonium sulfate and starch solution evenly, wherein the mass ratio of iron filings, activated carbon powder, diatomaceous earth and ammonium sulfate is 13:2.5:16:1, starch solution The mass ratio of starch content to ammonium sulfate is 1:3, and the mixture is pressed into mud cake;

[0045] (3) Granulation

[0046] Send the mud cake to the granulator to make spherical packing with a diameter of 10-15mm;

[0047] (4) Burn

[0048] The spherical filler is put into an atmosphere furnace, and nitrogen is introduced as a protective gas, and burned at 500° C. for 60 minutes to make spherical iro...

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Abstract

The invention discloses kieselguhr-based ferric carbon ceramsite packing. The kieselguhr-based ferric carbon ceramsite packing consists of scrap iron, activated carbon powder, kieselguhr, ammonium sulfate and a starch solution. The invention further particularly discloses a preparation method of ceramsite packing. The preparation method comprises the following steps: uniformly mixing the scrap iron, the activated carbon powder, the kieselguhr, ammonium sulfate and the starch solution; pressing the mixture into a mud cake; and then pelleting and firing to obtain the final product. The kieselguhr is used as the base material of the scrap iron and the activated carbon powder, after pelleting, the kieselguhr, the scrap iron and the activated carbon powder are fused integrally by high-temperature firing, under the effects of starch as an enhancer and ammonium sulfate as a pore-forming agent, spherical ceramsite which is high in strength and has a plurality of pores inside is formed, the problems of adhesion of the scrap iron and uneven distribution of iron and carbon are solved, the shortcoming of hardening and passivation of traditional iron and carbon micro-electrolysis packing can be overcome, micro-electrolysis reaction efficiency is improved, furthermore, operation of packing supplementing can be simplified, and labor intensity is reduced.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a diatomite-based iron-carbon ceramsite filler. The invention also discloses a preparation method of the ceramsite filler. Background technique [0002] The micro-electrolysis method is a good process for treating wastewater by using the principle of metal corrosion to form a primary battery, also known as the internal electrolysis method and iron filings filtration method. The result of the micro-electrolysis reaction is that iron is corroded and turned into divalent iron ions into the solution. Due to the coagulation effect of iron ions, it attracts the opposite sex with the weakly negatively charged particles in the pollutants to form relatively stable flocs. remove. This method has the advantages of wide application range, good treatment effect, long service life, low cost and convenient operation and maintenance. [0003] Since the birth of micro-electr...

Claims

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Application Information

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IPC IPC(8): C02F1/461
CPCC02F1/461
Inventor 罗清张安龙景立明刘叶吴养育王森张希娟张丹
Owner SHAANXI UNIV OF SCI & TECH
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