CN105349057B - A kind of method of binding agent and the block Super Pure Pyrite Wang Concentrate of preparation - Google Patents
A kind of method of binding agent and the block Super Pure Pyrite Wang Concentrate of preparation Download PDFInfo
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- CN105349057B CN105349057B CN201510793960.2A CN201510793960A CN105349057B CN 105349057 B CN105349057 B CN 105349057B CN 201510793960 A CN201510793960 A CN 201510793960A CN 105349057 B CN105349057 B CN 105349057B
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Abstract
It is composed of the following components by mass percentage the invention discloses a kind of binding agent：The special dry glue powder 10~18% of polyethylene polypropylene, sodium hydroxide 25~33%, cornstarch 49~65%, said components mass percent sum is 100%.The invention also discloses the method for preparing block Super Pure Pyrite Wang Concentrate, powdered iron concentrate moisture content is baked 7~10%, then fully mixed with binding agent, extrusion forming, drying, drying.Binding agent of the present invention, good dispersion can fully be mixed with powdered iron concentrate；Running into high temperature can fully volatilize, and can change iron concentrate surface property, increase molecule cohesive force, and will not be chemically reacted with iron concentrate, pollute small when using, stripping forming is easy to during twin rollers briquetting.
Description
Technical field
The invention belongs to material and its preparing technical field, and in particular to a kind of binding agent, be adopted the invention further relates to one kind
The method that block Super Pure Pyrite Wang Concentrate is prepared with the binding agent.
Background technology
So-called Super Pure Pyrite Wang Concentrate refers to the iron concentrate that sulfur content is more than 51.5%, and it is as the addition in cast iron smelting
Agent, is widely used (such as Japan) abroad.But powdered Super Pure Pyrite Wang Concentrate, in cast iron smelts adding procedure, is difficult behaviour
Control, it is easy to burn, there is dust from flying again, directly affect additive effect and pollution environment.Powdery is substituted with block iron concentrate
The need for iron concentrate is production.Between the general 10~40mm of particle diameter for requiring block, intensity is more than 8MPa.
Sulfur content is directly more than more than 48% ore reduction by certain domestic iron concentrate manufacturer, be sieved into particle diameter 10~
40mm lump ore carries out pack sale, without sorting, briquetting.It relies on the iron concentrate nugget that unique resource is produced, without wide
General applicability.
The content of the invention
It is an object of the invention to provide a kind of binding agent, it can realize and block iron concentrate is made in powdered iron concentrate.
It is a further object to provide a kind of method that block Super Pure Pyrite Wang Concentrate is prepared using above-mentioned binding agent.
The technical solution adopted in the present invention is that a kind of binding agent is composed of the following components by mass percentage：Polyethylene
The special dry glue powder 10~18% of polypropylene fibre, sodium hydroxide 25~33%, cornstarch 49~65%, said components mass percent it
With for 100%.
The features of the present invention is also resided in,
Cornstarch water content is less than 2%.
Another technical scheme of the present invention is that the side of block Super Pure Pyrite Wang Concentrate is prepared using above-mentioned binding agent
Method, specifically implements according to following steps：
Step 1, the special dry glue powder 10~18% of polyethylene polypropylene is weighed respectively by mass percentage, sodium hydroxide 25~
33%, cornstarch 49~65%, said components mass percent sum is 100%, and cornstarch water content is less than 2%,
Said components are sufficiently mixed uniformly, binding agent is obtained；
Step 2, powdered iron concentrate moisture content is baked 7~10%, the binding agent then obtained with step 1 is fully mixed,
Extrusion forming, drying, drying.
The features of the present invention is also resided in,
Extrusion forming, which is used, in step 2 suppresses roller cuber.
Drying is baked using vacuum drier in step 2, and temperature is 60~100 DEG C, time 3h.
The beneficial effects of the invention are as follows,
1. binding agent of the present invention, good dispersion, can fully be mixed with powdered iron concentrate；Running into high temperature can fully wave
Hair, can change iron concentrate surface property, increase molecule cohesive force, and will not be chemically reacted with iron concentrate, be polluted when using
It is small, it is easy to stripping forming during twin rollers briquetting, it is easy to buy in market, and it is cheap.
2. preparing the method for block Super Pure Pyrite Wang Concentrate using binding agent, powdered iron concentrate and binding agent are directly mixed,
Compacting, drying obtains particle diameter and reaches 10~40mm, and compressive resistance reaches more than 8MPa block iron concentrate, solved in cast iron smelting
Refine in adding procedure, powdered iron concentrate not easy operation control, it is easy to burn, there is dust from flying again, directly affect additive effect
The problem of with pollution environment, and preparation method of the present invention is simple, it is convenient to implement.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of binding agent of the present invention, it is composed of the following components by mass percentage：The special dry glue powder 10 of polyethylene polypropylene~
18%, sodium hydroxide 25~33%, cornstarch 49~65%, said components mass percent sum is 100%.
Cornstarch water content is less than 2%.
The method that block Super Pure Pyrite Wang Concentrate is prepared using above-mentioned binding agent, is specifically implemented according to following steps：
Step 1, the special dry glue powder 10~18% of polyethylene polypropylene is weighed respectively by mass percentage, sodium hydroxide 25~
33%, cornstarch 49~65%, said components mass percent sum is 100%, and cornstarch water content is less than 2%,
Said components are sufficiently mixed uniformly, binding agent is obtained；
Step 2, powdered iron concentrate moisture content is baked 7~10%, the binding agent then obtained with step 1 is fully mixed,
Baked using to roller cuber extrusion forming, drying, using vacuum drier, temperature is 60~100 DEG C, time 3h, naturally cold
But produce.
The general principle of briquetting in the present invention：
Freely loose fine grained powder material, due to the friction between particle and mechanical engagement, is mutually lapped particle, shape
Into the space more many times greater than particle, this phenomenon is referred to as " arch bridge effect ".In pressing process, external force effect makes " arch bridge effect
Should " be damaged, filling space occurs between particle and process is rearranged, contact area increases between causing particle, and agglomerate is close
Degree is improved.For the intensity of agglomerate, mainly there are two kinds of power, one kind is intergranular frictional force in agglomerate, another
It is intergranular molecule cohesive force.In pressing process, the intensity of agglomerate increases and increased with material plasticity, the good material of plasticity
During compacting, material is also easy to produce deformation, intergranular contact area is quickly increased, and has stronger frictional force and molecule cohesive force
Collective effect, makes agglomerate have preferable intensity；The material suppression performance of plasticity difference is poor, and storeroom is not susceptible to deformation, in pressure
Internal stress effect is notable during system, when the demoulding, because the effect bolus volume of elastic after effect stress increases, makes particle indirect
Contacting surface product is reduced, and molecule cohesive force declines, agglomerate intensity is poor.For the poor material of plasticity, it is necessary to add binding agent, change
Become the surface property of material, increase the effect of molecule cohesive force, improve agglomerate intensity.Super Pure Pyrite Wang Concentrate is the thing for belonging to plasticity difference
Material.
Embodiment 1
Step 1, the special dry glue powder 14% of polyethylene polypropylene, sodium hydroxide 29%, corn are weighed respectively by mass percentage
Starch 57%, said components mass percent sum is 100%, and cornstarch water content is abundant by said components less than 2%
It is well mixed, obtain binding agent；
Step 2, powdered iron concentrate moisture content is baked 10%, the binding agent then obtained with step 1 is fully mixed, used
Baked to roller cuber extrusion forming, drying, using vacuum drier, temperature is 100 DEG C, and time 3h, natural cooling is produced.
Embodiment 2
Step 1, the special dry glue powder 18% of polyethylene polypropylene, sodium hydroxide 33%, corn are weighed respectively by mass percentage
Starch 49%, said components mass percent sum is 100%, and cornstarch water content is abundant by said components less than 2%
It is well mixed, obtain binding agent；
Step 2, powdered iron concentrate moisture content is baked 9%, the binding agent then obtained with step 1 is fully mixed, used
Baked to roller cuber extrusion forming, drying, using vacuum drier, temperature is 80 DEG C, and time 3h, natural cooling is produced.
Embodiment 3
Step 1, the special dry glue powder 10% of polyethylene polypropylene, sodium hydroxide 25%, corn are weighed respectively by mass percentage
Starch 65%, said components mass percent sum is 100%, and cornstarch water content is abundant by said components less than 2%
It is well mixed, obtain binding agent；
Step 2, powdered iron concentrate moisture content is baked 7%, the binding agent then obtained with step 1 is fully mixed, used
Baked to roller cuber extrusion forming, drying, using vacuum drier, temperature is 60 DEG C, and time 3h, natural cooling is produced.
Claims (3)
1. a kind of binding agent, it is characterised in that composed of the following components by mass percentage：The special dry glue powder 10 of polyethylene polypropylene
~18%, sodium hydroxide 25~33%, cornstarch 49~65%, said components mass percent sum is 100%；Corn forms sediment
Powder water content is less than 2%.
2. prepare the method for block Super Pure Pyrite Wang Concentrate using the binding agent described in claim 1, it is characterised in that it is specific according to
Lower step is implemented：
Step 1, the special dry glue powder 10~18% of polyethylene polypropylene is weighed respectively by mass percentage, sodium hydroxide 25~33%,
Cornstarch 49~65%, said components mass percent sum is 100%, and cornstarch water content is less than 2%, will be above-mentioned
Component is sufficiently mixed uniformly, obtains binding agent；
Step 2, powdered iron concentrate moisture content is baked 7~10%, the binding agent then obtained with step 1 is fully mixed, extruding
Shaping, drying, drying；
Drying is baked using vacuum drier in step 2, and temperature is 60~100 DEG C, time 3h.
3. the method according to claim 2 for preparing block Super Pure Pyrite Wang Concentrate, it is characterised in that extrusion forming in step 2
Suppressed using to roller cuber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510793960.2A CN105349057B (en) | 2015-11-17 | 2015-11-17 | A kind of method of binding agent and the block Super Pure Pyrite Wang Concentrate of preparation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510793960.2A CN105349057B (en) | 2015-11-17 | 2015-11-17 | A kind of method of binding agent and the block Super Pure Pyrite Wang Concentrate of preparation |
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| Publication Number | Publication Date |
|---|---|
| CN105349057A CN105349057A (en) | 2016-02-24 |
| CN105349057B true CN105349057B (en) | 2017-09-12 |
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| CN201510793960.2A Active CN105349057B (en) | 2015-11-17 | 2015-11-17 | A kind of method of binding agent and the block Super Pure Pyrite Wang Concentrate of preparation |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247903A (en) * | 1998-09-11 | 2000-03-22 | 中南工业大学 | Molding method of roasted concentrated molybdenum ore |
| CN101412936A (en) * | 2008-12-03 | 2009-04-22 | 陈其厚 | Clean coal |
| CN102320668A (en) * | 2011-06-03 | 2012-01-18 | 合肥工业大学 | Pyrite nano mineral material and preparation method thereof |
-
2015
- 2015-11-17 CN CN201510793960.2A patent/CN105349057B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247903A (en) * | 1998-09-11 | 2000-03-22 | 中南工业大学 | Molding method of roasted concentrated molybdenum ore |
| CN101412936A (en) * | 2008-12-03 | 2009-04-22 | 陈其厚 | Clean coal |
| CN102320668A (en) * | 2011-06-03 | 2012-01-18 | 合肥工业大学 | Pyrite nano mineral material and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN105349057A (en) | 2016-02-24 |
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