Method for preparing polysilicon ferric sulfate water purifying agent from steel slag and water slag

A technology of iron water purifying agent and water slag, which is applied in the field of preparation of inorganic polymer flocculants, can solve the problems of high price and high cost, and achieve the effect of good effect and low preparation cost

Inactive Publication Date: 2008-08-13
朱成林 +1
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Problems solved by technology

This preparation method requires expensive chemical raw materi

Method used

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  • Method for preparing polysilicon ferric sulfate water purifying agent from steel slag and water slag
  • Method for preparing polysilicon ferric sulfate water purifying agent from steel slag and water slag

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Embodiment Construction

[0014] The steel slag and water slag used in the following examples are produced by Metallurgical Slag Company of Tangshan Iron and Steel Group, and their main chemical components are shown in Table 1 and Table 2 respectively.

[0015] Table 1 Main components of Tangshan steel slag

[0016]

[0017] Table 2 The main components of Tangshan steel slag

[0018]

[0019] The method for preparing polysilicon ferric sulfate water purifying agent with it as raw material is as follows:

[0020] (1) Weigh 600g of steel slag, 400g of water slag, and 30g of natural quartz (where SiO 2 Content is 95.52%), after mixing, join in the reactor that is provided with agitator and reflux condensing device;

[0021] (2) adding 3000 g of sulfuric acid solution with a concentration of 10% into the above-mentioned reactor, stirring constantly, controlling the temperature at 120° C., and filtering after reflux reaction for 2.5 hours to obtain filtrate and filter residue;

[0022] (3) cooling ...

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Abstract

The present invention provides a method of PFSS water clarified reagent using industry's steel slag and grain slag as main material. Al, Fe salting liquid is prepared by sulphuric acid resolving steel slag and grain slag, filtrate and filter residue are obtained by filtering; the filtrate is adjusted pH value to remove Al, adding H2O2 to oxidize ferrous iron being ferric can obtains Fe 3+ precursor; the filter residue is alkali resolved by NaOH solution to obtain Na2SiO3 precursor; the two precursors are added in H3PO4 as stabilizing agent, PFSS are prepared by polymerization reaction. The invention realizes resource regeneration of metallurgical slag, the prepared PFSS has lower cost, better water purifying effect, capable of widely use for purifying factory effluent and domestic sewage such as liquid waste and paper making, printing in steel factory.

Description

technical field [0001] The invention relates to a method for preparing an inorganic polymer flocculant, in particular to a method for preparing polysilicon ferric sulfate water purifying agent with metallurgical slag. Background technique [0002] Polymeric Ferric Silicate Sulfate (PFSS) is an inorganic polymer flocculant with good performance, which has the characteristics of less water purification and no toxic side effects. The current preparation of polysilicon ferric sulfate is made by using sodium silicate and ferric sulfate as raw materials, and using activated silicic acid as a coagulant aid for ferric sulfate. This preparation method needs expensive chemical raw materials as main raw materials, and the cost is relatively high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing polysilicon ferric sulfate water purifying agent with low cost and simple process. [0004] For this reason...

Claims

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Application Information

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IPC IPC(8): C01B33/00C02F1/52B09B3/00
Inventor 朱成林岳斌
Owner 朱成林
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