CN1071181A

CN1071181A - Utilize the Dyhard RU 100 industrial residue to produce filler of high molecular synthetic products

Info

Publication number: CN1071181A
Application number: CN 91109467
Authority: CN
Inventors: 屠志康
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-09-24
Filing date: 1991-09-24
Publication date: 1993-04-21

Abstract

The present invention is a kind of method of utilizing of Dyhard RU 100 industrial residue.Be that utilization mechanical dehydration, high-temperature baking burn, process meanses such as selection by winnowing or screening purification, remove wherein impurity such as contained humidity, river sand, itrogenous organic substance, be processed into a kind of carbon containing light calcium carbonate chemical materials of forming by precipitated chalk and graphite mould carbon element, can replace pure white light calcium carbonate as weighting agent, be widely used in the production of light industry products such as dark colour rubber, plastics, coating, printing ink, obtain satisfied result of use.

Implement this processing method; the optimal path of a waste residue processing not only can be provided for Dyhard RU 100 manufacturer; the recovery of three wastess(waste gas,waste water and industrial residue) is polluted; preserve the ecological environment; economize the land resource and make contributions, and the filler raw material of part super quality and competitive price can be provided for light industries such as rubber, plastics, thereby reduce production costs greatly; simultaneously also for chemical industry is economized on the use of funds, the energy and limestone mineral resource, so shown bigger social benefit and economic benefit.

Description

Utilize the Dyhard RU 100 industrial residue to produce filler of high molecular synthetic products

The present invention is a kind of method of utilizing of chemical industry waste residue; it is a kind of product innovation of disposal of waste gas, water and industrial residue and field of environment protection; promptly utilize harmful waste residue of discharging in the production of Chemicals Dyhard RU 100 to reprocess processing; produce a kind of filler material (tentative carbon containing light calcium carbonate by name is called for short the carbon containing fine particle calcium carbonate) that is widely used in replacing in the Polymer Synthesizing production of articles such as rubber, plastics, coating, printing ink pure white light calcium carbonate (being called for short pure white fine particle calcium carbonate).

In the production process of Chemicals Dyhard RU 100, discharge a kind of waste residue, quantity is very big, and 1 ton of finished product of every production goes out the quantity of slag more than 5 tons, and a family produces 1500 tons medium-sized factory per year, and a year bed drain purge reaches 1.5 ten thousand tons (closing 0.75 ten thousand ton of dried slag).This waste residue, outward appearance is a grey, is finely powdered, up to now, does not still have appropriate governance way, most factories all take over the negative means of stacking in rural soil for use with the expenditure effluent charge and handle; Not only waste land resources, and wherein itrogenous organic substance flows into Hu Tang, can stain water quality, brings endless trouble.

The objective of the invention is to provide for this industrial residue a kind of method of utilizing of maximum value.Utilize this method, dicyandiamide sludge as material can be removed oxious component and impurity, change a kind of chemical materials of forming by precipitated chalk and graphite mould carbon element into, replace pure white fine particle calcium carbonate and make weighting agent, be widely used in the production of light industry products such as dark colour rubber, plastics, coating, printing ink, obtain satisfied result of use.Implement this method, the optimal path of a waste residue processing not only can be provided for Dyhard RU 100 manufacturer, the recovery of three wastess(waste gas,waste water and industrial residue) is polluted, preserve the ecological environment, economize the land resource and make contributions, thereby and can reduce production costs greatly, and for chemical industry is economized on the use of funds, the energy and limestone mineral resource for light industries such as rubber, plastics provide the filler raw material of part super quality and competitive price; So shown good social benefit and economic benefit.

The objective of the invention is to carry out like this:

One, technological principle

The waste residue of in Dyhard RU 100 factory filtering basin, discharging, water content up to 50-52%(shown in A sequence in the accompanying drawing one), the method that available mechanical dehydration and heating baking are burnt is got rid of.The precipitated chalk particulate (accounting for 70-72%) that its dry-matter system is generated by carbonization decalcification after the lime nitrogen hydrolysis, the mixture of coarse particles river sand (the accounting for 18-20%) composition that stays behind the mother liquor is reclaimed in free carbon element particulate (accounting for 8-10%) of the graphite mould of bringing in the lime nitrogen raw material and sand filtration, and other contains itrogenous organic substance (accounting for 0.8-1.2%) and micro-acid non-soluble substance impurity (below 0.5%) such as cyanamide residual in a small amount of not filtering mother liquor, urea.

Form as can be known according to above-listed material, coarse particles river sand wherein (shown in B sequence in the accompanying drawing one, being 200 orders/inch standard sieve screenings content) can separate dry material with method of sieving or air blast process; Material behind the sand of separation river, major ingredient precipitated chalk content is up to (shown in D sequence in the accompanying drawing one, emitting CO for reacting with excessive HCL more than 85% ₂With washing elimination CaCL ₂The content that calculate the back), be industrial chemicals with utility value, should give reservation; The graphite mould carbon content also more (shown in E sequence in the accompanying drawing one, be 850 ℃ of high-temp combustions after, the content that the oxidized volatilization of C is calculated), because of its chemical property is stablized, though available high-temperature combustion method separates, can cause lime carbonate to decompose sex change, so can only be kept; Though itrogenous organic substance content few (shown in C sequence in the accompanying drawing one, be 300 ℃ of super melting temperatures under baking bright after, NH ₂CNCH ₄ON ₂The content that calculates Deng itrogenous organic substance gasification volatilization), be detrimental impurity, can volatilize under proper temperature removes; Also have part free alkali, acid non-soluble substance and other metals content impurities atomic (shown in F sequence in the accompanying drawing one, be all kinds of compositions remaining ash after physics, chemical process are all separated, be its total content), can not cause big influence to the physical and chemical performance of whole material.

Utilize above-mentioned all kinds of method, after separating and removing moisture, river sand, itrogenous organic substance, remain be precipitated chalk (accounting for more than 87%) and graphite mould carbon element (accounting for more than 12%) total content reach miscellany more than 99% (as shown in accompanying drawing two, for burn through dehydration, baking, method processing treatment such as screening are the analyzing and testing result of short run trial production gained finished product).These two kinds of materials are all the inert material, chemical property is stable, good dispersity, high temperature resistant, rub resistance, anticorrosive, can be used as the weighting agent in the high molecular synthetic products fully, obtain satisfied result of use (shown in accompanying drawing three, for this trial product and traditional pure white fine particle calcium carbonate are all weighting agent, with same prescription, the contrast of technological forming gained physical properties of rubber compound detected result, except that index of breaking tenacity is lower slightly, other every indexs all meet or exceed pure white fine particle calcium carbonate) (shown in accompanying drawing four, for this trial product directly applies to the physicals detected result of tire triangle glue production test resulting product as weighting agent, every index all meets or exceeds the Products Quality level of making of pure white fine particle calcium carbonate).

Two, technical process

According to above-mentioned technological principle,, can take a series of physics to carry out processing treatment with method chemistry for dicyandiamide sludge as material being changed into the filler material of goods technical requirementss such as can satisfying ordinary rubber, plastics.Now designing following technical process produces:

1, dehydration: take from the slag charge of Dyhard RU 100 factory pollution discharge pond, be the underflow shape, water content is very big, must implement mechanical powerful dehydration with horizontal centrifuge or plate and frame(type)filter press, and its water content is reduced to minimum level.This process that is got rid of part filtrate impurity.

2, baking is burnt: the slag charge after dehydration is the leather hard powder agglomates, input is provided with the drying plant of whipping appts, keep 250～300 ℃ of Heating temperatures, under this temperature, dry by the fire bright, the one side transpiring moisture, the aspect makes wherein contained itrogenous organic substance gasification volatilization in addition, enters the high-altitude with water vapor from flue.

3, screening or selection by winnowing: the slag charge through drying by the fire after burning is dry powder, can set up high pressure positive blower at dryer, regulates air quantity, directly carries out selection by winnowing, or moves into the coarse particles river sand separation that sieve apparatus will wherein be mixed with from dryer.

4, packing: remove the material gray fine powder that obtains behind the sand of river through selection by winnowing or screening, the i.e. miscellany of forming by precipitated chalk and two kinds of compositions of graphite mould carbon element, be to be end product, can mould bag with film braiding bilayer at winnowing machine or sieve apparatus discharge port and pack, after quality test is qualified as the required weighting agent product of goods such as rubber, plastics.

Three, product technology standard

By the carbon containing fine particle calcium carbonate product that above-mentioned technical process is produced, (see accompanying drawing two) as can be known from the analyzing and testing result, its physicals and Chemical Composition and pure white fine particle calcium carbonate are very close, are the appearance color difference, and proportion has difference slightly.So, fully can be with the technological standard of light calcium carbonate as foundation, to satisfy rubber.Plastics are prerequisite to the performance requriements of weighting agent, properties and characteristics according to this carbon containing fine particle calcium carbonate product, carry out suitable modification, the technical standard of enterprise that works up this product is (shown in accompanying drawing five, be contrast light calcium carbonate government standard, the carbon containing light calcium carbonate company standard of preliminary establishment), as the necessary regulations of manufacturing enterprise's quality control and control.

Four, secondary pollution situation

From above-mentioned technical process as can be known, according to this processing method processing treatment dicyandiamide sludge as material, wherein unique oxious component is itrogenous organic substance (mainly being prussiate), though must discharge with two kinds of states of liquids and gases, content is few, can not cause environmental pollution.Though slag charge must discharging account for the filtrate of throwing the quantity of slag about 25%, wherein contained NH in dehydration ₂CN is less than 1%, as long as the dilute with water flushing enters water drain, its amount of infiltrating the surface water is very little, can not exceed state and decide water quality standard boundary (0.1mg/L); Slag charge can produce some ammonias in process is burnt in baking, but its content only account for mixed gas 2% less than, and be to enter the high-altitude from flue, its amount of infiltrating ground air is also very little, can not exceed government standard boundary (30mg/m ³).Slag charge is isolated the coarse particles river sand that accounts for out the quantity of slag about 20% in selection by winnowing or screening process for another example, can all supply with the first-class sand material that building trade is made concrete and masonry mortar, more can not produce secondary pollution.

Claims

1, a kind of Dyhard RU 100 industrial residue utilizes method, it is characterized in that using physics and process means chemistry, remove impurity such as moisture contained in this waste residue, river sand, itrogenous organic substance, be processed as a kind of chemical materials of forming by precipitated chalk and graphite mould carbon element, can be used as the filler raw material of Polymer Synthesizing goods such as dark colour rubber, plastics, coating, printing ink, obtain satisfied result of use.

2, dicyandiamide sludge as material according to claim 1 utilizes method, it is characterized in that utilizing that contained major ingredient precipitated chalk of this waste residue and graphite mould carbon element all are that chemical property is stable, good dispersity, high temperature resistant, erosion-resisting material, except that the outward appearance gray, other physical and chemical performances all can satisfy the technical requirements of high molecular synthetic products to weighting agent.

3, dicyandiamide sludge as material according to claim 1 utilizes method, it is characterized in that using that mechanical dehydration, high-temperature baking burn, processing methodes such as screening or selection by winnowing purification, remove impurity such as moisture contained in this waste residue, river sand, itrogenous organic substance, produce a kind of " carbon containing light calcium carbonate " product, as dark colour rubber, the weighting agent of light industry products such as plastics can obtain satisfied result of use.