CN102242366B - Corundum softener and preparation method thereof - Google Patents
Corundum softener and preparation method thereof Download PDFInfo
- Publication number
- CN102242366B CN102242366B CN201110178628A CN201110178628A CN102242366B CN 102242366 B CN102242366 B CN 102242366B CN 201110178628 A CN201110178628 A CN 201110178628A CN 201110178628 A CN201110178628 A CN 201110178628A CN 102242366 B CN102242366 B CN 102242366B
- Authority
- CN
- China
- Prior art keywords
- parts
- corundum
- tenderizer
- acid
- hydrocerol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to a corundum softener comprising the following components in parts by weight: 100 parts of purified water, 50-60 parts of phosphoric acid, 6-10 parts of sulfuric acid, 10-16 parts of citric acid, 15-20 parts of oxalic acid, 10-16 parts of ammonium bifluoride, 2-3 parts of fluorocarbon nonionic surfactants and 1-1.8 parts of sulfourea. A preparation method of the corundum softener comprises the following steps of: 1, adding the purified water into a clean stirring barrel, starting up a stirring dispersion machine, controlling the rotating speed at 50-100R/min, stepwise adding the sulfuric acid, stirring for 20-30 minutes and then stilling and naturally cooling to normal temperature; 2, starting up a stirring machine, controlling the rotating speed at 100-150R/min, adding the phosphoric acid, the oxalic acid and the citric acid into the upper liquid, stirring and mixing; 3, adding the ammonium bifluoride, the sulfourea and the fluorocarbon nonionic surfactants into the upper liquid, stirring for 20-25 minutes and controlling the rotating speed at 100-150R/min; and 4, stilling for 1-2 hours and then separately loading. The corundum softener has the advantages of convenience for use, high safety, low toxicity, low pollution, high efficiency, no damage to castings and the like.
Description
Technical field
The present invention is mainly used in the investment cast industry; Relate in particular to and be used for removing the residual corundum of cast(ing) surface and the corundum tenderizer and the method for manufacture thereof of silica sand that investment cast is produced, that this corundum tenderizer has is easy to use, safe, low toxicity, hang down pollution, high-level efficiency, do not damage advantage such as cast member.
Background technology
Along with expanding economy, the price of the used zircon sand of investment cast straight line rises, and its most dependence on import, and China's foundry enterprise just faces great survival pressure like this.Therefore, each enterprise adopts relative low price and domestic resource abundant relatively corundum (aluminium sesquioxide, Al one after another
2O
3) replace zircon sand.
Because corundum is through the calcination more than 1000 ℃, its structure is quite tight, and also because its distinctive chemical property makes the residual corundum utmost point of cast(ing) surface be not easy to remove, these defectives have also restricted being widely used and promoting of corundum.
Traditional removing method is that the foundry goods that leaves corundum is immersed in the high dense hydrofluoric acid 2-6 hour, lets its remained on surface corundum partly dissolve or loosening, sprays at a high speed with little shot then and hits its surface, and residual sand is split away off from casting surface.
Hydrofluoric acid has a lot of hazardness:
1, the hydrogen ion in the hydrofluoric acid has dehydration and corrosive nature to tissue, and fluorine is one of the most active non-metallic element, with hydrogen ions jail (ionization constant K=3.5*10-4).Skin is with after hydrofluoric acid contacts, and the HF of nonionic state constantly dissociates and is penetrated into deep tissues, and the dissolved cell film causes epidermis, corium, subcutis and even flesh layer liquefaction and necrosis.Fluorion combines the formation indissoluble salt with calcium and mg ion in the tissue.The minimizing of calcium ion makes cell increase the permeability of potassium ion, and potassium ion causes the depolarize of neurocyte from the extracellular and causes severe pain;
2, estimate that the people takes in 1.5g hydrofluoric acid and can cause dead immediately;
3, suck the hydrofluoric acid mist of high density, cause bronchitis and hemorrhagic wet lung;
4, hydrofluoric acid also can cause serious poisoning through skin absorption.
Because hydrofluoric acid has very big harm, so this removing method has disadvantage and deficiency: long, toxicity of time greatly, very easily contaminate environment, destroy geologic framework, easy damaged foundry goods, the healthy formation of workman is greatly endangered.
According to incompletely statistics; The hydrofluoric acid (50%) that investment cast industry in the whole nation is used for removing the various residual sand of cast(ing) surface every year is higher than 10,000 tons; And these hydrofluoric acid all enter in atmosphere or river or the soil with gas or with other fluorochemical form, to environment, to soil, constituted great threat and hidden danger to people are healthy.
Therefore seeking a kind of low murder by poisoning, low pollution, the loosening method of the manageable residual sand of security, have great social effect and economic worth, also is the responsibility and the problem that must solve of foundry industry.
Summary of the invention
The technical problem that the present invention will solve is: overcome in the prior art that high pollution, toxicity that the corundum that uses high dense hydrofluoric acid to remove cast(ing) surface brings are big, the time is long, the defective of easy damaged foundry goods, injury workers ' health, a kind of easy to use, safe, low toxicity is provided, hangs down pollution, high-level efficiency, does not damage the corundum tenderizer and the method for manufacture thereof of cast member.
In order to solve the problems of the technologies described above; The present invention proposes following technical scheme: a kind of corundum tenderizer; It is composed of the following components, and its umber is parts by weight: 100 parts of pure water, phosphoric acid 50-60 part, sulfuric acid 6-10 part, Hydrocerol A 10-16 part, oxalic acid 15-20 part, matt salt 10-16 part, fluorine carbon nonionogenic tenside 2-3 part, thiocarbamide 1-1.8 part.
Preferably, above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 60 parts of phosphoric acid, 10 parts in sulfuric acid, 16 parts of Hydrocerol As, 20 parts of oxalic acid, 16 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
Preferably, above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 50 parts of phosphoric acid, 6 parts in sulfuric acid, 10 parts of Hydrocerol As, 15 parts of oxalic acid, 10 parts of matt salts, 2 parts of fluorine carbon nonionogenic tensides, 1 part of thiocarbamide.
Preferably, above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 55 parts of phosphoric acid, 7 parts in sulfuric acid, 13 parts of Hydrocerol As, 17 parts of oxalic acid, 13 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
Preferably; Above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 57 parts of phosphoric acid, 8 parts in sulfuric acid, 15 parts of Hydrocerol As, 18 parts of oxalic acid, 14 parts of matt salts, 2.5 parts of fluorine carbon nonionogenic tensides, 1.8 parts of thiocarbamides.
In order to solve the problems of the technologies described above, the present invention proposes following technical scheme: a kind of method of manufacture of described corundum tenderizer, it comprises the following steps:
Step 1: pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid, oxalic acid, Hydrocerol A in the liquid, is stirred to mix;
Step 3: up add matt salt, thiocarbamide, fluorine carbon nonionogenic tenside in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
Preferably, above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 60 parts of phosphoric acid, 10 parts in sulfuric acid, 16 parts of Hydrocerol As, 20 parts of oxalic acid, 16 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
Preferably, above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 50 parts of phosphoric acid, 6 parts in sulfuric acid, 10 parts of Hydrocerol As, 15 parts of oxalic acid, 10 parts of matt salts, 2 parts of fluorine carbon nonionogenic tensides, 1 part of thiocarbamide.
Preferably, above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 55 parts of phosphoric acid, 7 parts in sulfuric acid, 13 parts of Hydrocerol As, 17 parts of oxalic acid, 13 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
Preferably; Above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 57 parts of phosphoric acid, 8 parts in sulfuric acid, 15 parts of Hydrocerol As, 18 parts of oxalic acid, 14 parts of matt salts, 2.5 parts of fluorine carbon nonionogenic tensides, 1.8 parts of thiocarbamides.
The present invention compares traditional method and has following effect:
1, shortens the process time.
2, reduce toxicity, improved security.
3, there is not toxic gas to overflow.
4, alleviated harm to environment.
5, the corrodibility to foundry goods weakens.
6, do not use hydrofluoric acid.
Embodiment
The present invention proposes a kind of corundum tenderizer; It is composed of the following components, and its umber is parts by weight: 100 parts of pure water, phosphoric acid 50-60 part, sulfuric acid 6-10 part, Hydrocerol A 10-16 part, oxalic acid 15-20 part, matt salt 10-16 part, fluorine carbon nonionogenic tenside 2-3 part, thiocarbamide 1-1.8 part.
The method of manufacture of above-mentioned corundum tenderizer comprises the following steps:
Step 1: pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid, oxalic acid, Hydrocerol A in the liquid, is stirred to mixing;
Step 3: up add matt salt, thiocarbamide, fluorine carbon nonionogenic tenside in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
Be described in detail four preparation embodiment that make above-mentioned corundum tenderizer below.
Preparation embodiment one
Step 1: the 100KG pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid 10KG, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid 60KG, oxalic acid 20KG, Hydrocerol A 16KG in the liquid, is stirred to mix;
Step 3: up add matt salt 16KG, thiocarbamide 1.5KG, fluorine carbon nonionogenic tenside 3KG in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
Preparation embodiment two
Step 1: the 100KG pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid 6KG, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid 50KG, oxalic acid 15KG, Hydrocerol A 10KG in the liquid, is stirred to mix;
Step 3: up add matt salt 10KG, thiocarbamide 1KG, fluorine carbon nonionogenic tenside 2KG in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
Preparation embodiment three
Step 1: the 100KG pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid 7KG, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid 55KG, oxalic acid 17KG, Hydrocerol A 13KG in the liquid, is stirred to mix;
Step 3: up add matt salt 13KG, thiocarbamide 1.5KG, fluorine carbon nonionogenic tenside 3KG in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
Preparation embodiment four
Step 1: the 100KG pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid 8KG, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid 57KG, oxalic acid 18KG, Hydrocerol A 15KG in the liquid, is stirred to mixing;
Step 3: up add matt salt 14KG, thiocarbamide 1.8KG, fluorine carbon nonionogenic tenside 3KG in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
Claims (10)
1. corundum tenderizer; It is composed of the following components, and its umber is parts by weight: 100 parts of pure water, phosphoric acid 50-60 part, sulfuric acid 6-10 part, Hydrocerol A 10-16 part, oxalic acid 15-20 part, matt salt 10-16 part, fluorine carbon nonionogenic tenside 2-3 part, thiocarbamide 1-1.8 part.
2. corundum tenderizer according to claim 1; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 60 parts of phosphoric acid, 10 parts in sulfuric acid, 16 parts of Hydrocerol As, 20 parts of oxalic acid, 16 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
3. corundum tenderizer according to claim 1; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 50 parts of phosphoric acid, 6 parts in sulfuric acid, 10 parts of Hydrocerol As, 15 parts of oxalic acid, 10 parts of matt salts, 2 parts of fluorine carbon nonionogenic tensides, 1 part of thiocarbamide.
4. corundum tenderizer according to claim 1; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 55 parts of phosphoric acid, 7 parts in sulfuric acid, 13 parts of Hydrocerol As, 17 parts of oxalic acid, 13 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
5. corundum tenderizer according to claim 1; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 57 parts of phosphoric acid, 8 parts in sulfuric acid, 15 parts of Hydrocerol As, 18 parts of oxalic acid, 14 parts of matt salts, 2.5 parts of fluorine carbon nonionogenic tensides, 1.8 parts of thiocarbamides.
6. the method for manufacture of a corundum tenderizer as claimed in claim 1, it comprises the following steps:
Step 1: pure water is joined in the clean agitation vat, start stirring dispersion machine, its rotating speed is controlled at 50-100R/min, progressively adds sulfuric acid, stirs the static then normal temperature that naturally cools to 20-30 minute;
Step 2: start stirrer, rotating speed is controlled at 100-150R/min, up adds phosphoric acid, oxalic acid, Hydrocerol A in the liquid, is stirred to mixing;
Step 3: up add matt salt, thiocarbamide, fluorine carbon nonionogenic tenside in the liquid, stirred 20-25 minute, rotating speed is controlled at 100-150R/min;
Step 4: static 1-2 hour, packing then.
7. the method for manufacture of corundum tenderizer according to claim 6; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 60 parts of phosphoric acid, 10 parts in sulfuric acid, 16 parts of Hydrocerol As, 20 parts of oxalic acid, 16 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
8. the method for manufacture of corundum tenderizer according to claim 6; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 50 parts of phosphoric acid, 6 parts in sulfuric acid, 10 parts of Hydrocerol As, 15 parts of oxalic acid, 10 parts of matt salts, 2 parts of fluorine carbon nonionogenic tensides, 1 part of thiocarbamide.
9. the method for manufacture of corundum tenderizer according to claim 6; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 55 parts of phosphoric acid, 7 parts in sulfuric acid, 13 parts of Hydrocerol As, 17 parts of oxalic acid, 13 parts of matt salts, 3 parts of fluorine carbon nonionogenic tensides, 1.5 parts of thiocarbamides.
10. the method for manufacture of corundum tenderizer according to claim 6; It is characterized in that: above-mentioned corundum tenderizer is composed of the following components, and its umber is parts by weight: 100 parts of pure water, 57 parts of phosphoric acid, 8 parts in sulfuric acid, 15 parts of Hydrocerol As, 18 parts of oxalic acid, 14 parts of matt salts, 2.5 parts of fluorine carbon nonionogenic tensides, 1.8 parts of thiocarbamides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110178628A CN102242366B (en) | 2011-06-29 | 2011-06-29 | Corundum softener and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110178628A CN102242366B (en) | 2011-06-29 | 2011-06-29 | Corundum softener and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102242366A CN102242366A (en) | 2011-11-16 |
| CN102242366B true CN102242366B (en) | 2012-10-03 |
Family
ID=44960601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110178628A Expired - Fee Related CN102242366B (en) | 2011-06-29 | 2011-06-29 | Corundum softener and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102242366B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205609A (en) * | 2006-12-18 | 2008-06-25 | 比亚迪股份有限公司 | Composition for magnesium alloy surface activation |
| CN101659413A (en) * | 2008-08-27 | 2010-03-03 | 比亚迪股份有限公司 | Method for preparing ultra-metallurgical grade silicon |
-
2011
- 2011-06-29 CN CN201110178628A patent/CN102242366B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205609A (en) * | 2006-12-18 | 2008-06-25 | 比亚迪股份有限公司 | Composition for magnesium alloy surface activation |
| CN101659413A (en) * | 2008-08-27 | 2010-03-03 | 比亚迪股份有限公司 | Method for preparing ultra-metallurgical grade silicon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102242366A (en) | 2011-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2735643A1 (en) | A method for the production of a lightweight magnesium silicate proppant and a proppant | |
| CN105951076A (en) | Magnesium alloy Zr-Ga-V conversion film treating agent and magnesium alloy Zr-Ga-V conversion film treating method | |
| CN102127642A (en) | Method for enriching rare-earth elements from red mud | |
| CN107931303A (en) | A kind of method using removal of surfactant alkaline residue chlorion | |
| CN104525847A (en) | Shell hardening agent | |
| CN102242366B (en) | Corundum softener and preparation method thereof | |
| WO2015067209A1 (en) | Heavy oil spontaneous emulsifying and viscosity-reducing system and preparation method therefor | |
| CN104947115B (en) | A kind of application method of environment-friendly metal polishing fluid | |
| CN104445346A (en) | Hydrothermal synthetic method of nano yttrium oxide powder | |
| CN104787946B (en) | A kind of wholly-owned source utilization process of steel rolling spent acid | |
| CN108455884B (en) | Preparation method of steel slag with phase change latent heat | |
| CN102921935A (en) | Method for clearing residual casting sand on casting surface | |
| CN103820232A (en) | Filtering material cleaning agent for oilfield sewage filtering system | |
| CN104057382A (en) | Local grinding method of stainless steel continuous casting billet | |
| CN108018544A (en) | Magnesium alloy rare-earth conversion coatings inorganic agent and its processing method | |
| RU2008150084A (en) | COMPOSITION INCLUDING SURFACE-ACTIVE INGREDIENT | |
| CN102515593A (en) | Method for producing semi-hydrated gypsum by using salt solution | |
| CN104445354A (en) | Hydrothermal synthetic method of nano yttrium oxide powder | |
| CN111390143B (en) | Normal-pressure removal method for ceramic core in titanium alloy casting of aircraft engine | |
| CN102765726A (en) | Method for preparing silica aerogel with rice hulls as raw mateirals | |
| CN116496770B (en) | Thickened supercritical CO for displacing crude oil2Composition and method for displacing crude oil | |
| CN106281262A (en) | Drilling fluid superhigh temperature anti-salt fluid loss agents and preparation method thereof | |
| CN110882630A (en) | Descaling agent of ceramic ultrafiltration membrane system for treating oily sewage in oil field and preparation method thereof | |
| CN111635751A (en) | Clean self-diverting acid liquid system suitable for carbonate reservoir and preparation method thereof | |
| CN102691069A (en) | Dedicated cleaning agent for metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN QLH NEW MATERIAL CO., LTD. Free format text: FORMER OWNER: WU YAOZU Effective date: 20130620 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130620 Address after: 504, room 518000, residence 4, building two, crape myrtle court, Ziwei center, Longcheng street, Longgang District, Guangdong, Shenzhen, Patentee after: SHENZHEN QIANLIXING NEW MATERIAL CO., LTD. Address before: 518000 New Asia Garden, central city, Longgang District, Guangdong, Shenzhen 4-5A Patentee before: Wu Yaozu |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20180629 |