61

Chemistry / How to separate Aluminum from Aluminum chloride solution

« on: 03/12/2019 14:38:11 »

Hi

I have a solutuon of I think it is Aluminum Chloride because I dissolved aluminum foil into hydrochloric acid. How can I separate aluminum from the solution so I can get back thr aluminum in any form?

The aim of asking this question is to get aluminum powder without grinding aluminum foil. I thought if I can dissolve aluminum foil into hcl maybe there is a way to get it back as a powder

Help me guys wih this

62

Chemistry / Can sodium nitrate ignite thermite?

« on: 27/11/2019 06:04:14 »

Hi there

If I want to prepsre Iron oxide/aluminum foil thermite is it possible to ignite it with sodium nitrate?


I dont have sparklers or magnesium ribon I only have siduum nitrate

63

Chemistry / How can I extract the potassium from fertiliser?

« on: 24/11/2019 17:52:48 »

Hi

I have a fertiliser bag with the following composition: Total Nitrogen 13℅, Phosphorus(P2O5) 0℅ and Pottasium (K2O) So.how can I extract that potassium? What methods can I use

I want that pottasium so I can use it to make potasium nitrate

64

Chemistry / Help on how to prolong lava stage of thermite

« on: 15/11/2019 17:49:06 »

Hi

I have a question regarding Iron oxide/aluminum thermite. After I ignite the thermite reaction and after a minute when molten lava is remained in the flower pot, how can I retain that yellow lava state for a long time say ciuple days without cooling at all?. Like putting something on a thermos and it can stay hot for a long time

What material can I use to conduct this experiment which can insulate and keep it hot for a long tume? Any ideas are welcomed

65

General Science / Can 2 or 3 mapp gas produre 2000+ C

« on: 15/01/2017 11:47:51 »

Hi[/size]If I take 2 or 3 mapp gas torches and lighr them and between them i put a crucible, will the inside the crucible temperature br motr than 2000 C ?[/color]

66

General Science / Re: Mapp gas question

« on: 01/03/2016 15:37:19 »

Chiral I dont think u have any experience with mapp gas.  I will find an answer somewhere else.

MOD EDIT: I have removed abusive and homophobic language from your post. Difference of opinion is fine, but ad hominem attacks and offensive language are not permitted on this forum.

67

General Science / Re: Mapp gas question

« on: 01/03/2016 15:12:24 »

The crucibles lenth is like a 7 year boys piners. So its small

The crucible is 0.3 inch thick

68

General Science / Re: Mapp gas question

« on: 01/03/2016 15:06:07 »

The crucibles lenth is like a 7 year boys piners. So its small

69

General Science / Can two gas torches heat a crucible to over 2000 degree Centigrade?

« on: 01/03/2016 11:44:08 »

Hello

If I take two small mapp gas torches and start them up, and put a crucible between them, by the combine power will they produce at least 2100 C? If I put something with a melting point of 2000 inside the crucible will it melt?

70

Chemistry / Re: How to make Tetraethylorthosilicate

« on: 13/11/2015 04:27:30 »

You probably don't want to be making these things at home. I wouldn't handle them outside of a fume hood (their vapors react with water to make SiO₂, so it will essentially react with your eyes and lungs to make sand.) Typically they are made from SiCl₄ (which is way nastier, reacting with your eyes to make sand and hydrochloric acid!) I once accidentally "welded" my glassware together when using SiHCl₃ on a humid day because it was slowly leaking out the joint between my flask and the condenser, and as soon as it contacted the humid air, it turned to glass and acid. I had to cut the condenser off to get my product out!

Is the TEOS your final goal, or is there perhaps another way to get what you really are after?

My final goal is to get TEOS. Cant I just protect my eyes?

71

Chemistry / How to make Tetraethylorthosilicate?

« on: 13/11/2015 01:33:53 »

Hello

How can I make one of these at home? tetraethylorthosilicate (TEOS), tetramethylorthosilicate (TMOS), tetramethoxysilanc (TMS), or tetraethoxysilane (TES).

72

Chemistry / Re: Can corundum be made with thermite?

« on: 06/11/2015 03:32:42 »

The Verneuil method uses a hydrogen and oxygen flame. In this technique you slowly sprinkle aluminum oxide dust, through the flame where it melts and then deposits on a collection blob. This technique made rubies very cheap so they could be used in all types of tech applications. A cheap laser pointer is now only a few bucks due to cheap rubies. This is 1950's tech that is still used today.

Another common technique is a molten flux technique. This is where you use a bath of molten salt, such as  Na3AlF6 ; lava in a bowl. This molten salt bath will allow the aluminum oxide to dissolve at a reasonable temperature, since the molten salt acts as a solvent. This can be done in a lab furnace using platinum crucibles. Next, you add seed crystals of corundum and cool the saturated flux. If you cool the entire flux slowly or set up a thermal gradient in the flux, the aluminum oxide will precipitate out onto the crystal making the seeds grow. This forms high quality crystals but they will have some flux inclusions that a professional jeweler would see and know it was synthetic. Natural have different incisions.

Years ago I did research growing gem quality crystals. I found that the molten flux technique can be modified, so the flux not only dissolves the aluminum oxide, but the flux can be used to chemically guide the growth habit of the crystals. This allows you to grow crystals with facets already on them. One flux I found could make hexagonal bi-pyramids.

Another alternative to make rubies and sapphires is using hydrothermal techniques, where you use water at high temperature and pressure in sealed containers. If you use super critical water with some small dissolve ions, this hydrothermal brine a very aggressive solvent for most minerals. In this technique, you set up a thermal gradient. This technique requires special moly-steels that can handle the temperature and pressure.

Although diverging slightly from the topic at hand, researching hydrothermal techniques for making crystals led to a theory I had many years ago. Water, especially sea water, due to the dissolve minerals, should be able to eat its way to the earth's mantle, if the water is contained under hydrothermal conditions, with a thermal gradient. 

In hydrothermal techniques, the raw aluminum oxide material is placed on the bottom, where it is hotter. The seed is at the top where it is slightly cooler. The entire thing is contained and pressurized.

The water will eat downward in the direction of higher temperate due to the higher solubility of minerals at higher temperature. The hotter water flows upward via thermal convection, and deposits material at the cooler top, where the mineral is less soluble. This cooler water sinks downward via convection ready to dissolve more.

Pools of super critical mineral water trapped in the crust, that sees a thermal gradient; mantle is hottest, will eat downward toward the heat, like a worm, sealing behind itself, renewing its solvent power.

How to sprinkle without splatterall over the place?

73

Chemistry / Re: Making corundum with thermite

« on: 03/11/2015 21:37:37 »

No, Corundum is Al2O3 crystals with impurities like titanium imbedded in the crystals, a thermite reaction leaves you with a molten pool of a metal such as Iron and aluminium oxides, it will not form any crystals, to make crystals you need to slowly deposits atoms on a solid surface, you cannot make them quick n' easy.

I found this text when I searched in the net and this book says that without going into details:

Simplified synthetic diamond produced by means of thermite; a mixture of aluminum or magnesium powder and barium peroxide or other metal oxide (1:1). When ignited by magnesium ribbon very high temperature about 2,200°C are produced. Soapstone mixed with thermite is also used for production of synthetic diamond. Saponite mixture is placed in a hollow ½ sphere in the center of this sphere will placed another hollow ½ sphere of tantalum, and in the last hollow ½ sphere center is placed the reagent composed of graphite and iron carbide.

Can anyone explain how to set up this setup

74

Chemistry / Can corundum be made with thermite?

« on: 03/11/2015 00:13:18 »

Hello

I know that  make sillicon metal from thermite reaction but is it possible to make corundum crystalsor diamonds with thermite? And what mixtures to use?

75

Chemistry / Re: Melting Aluminum Oxide

« on: 09/10/2015 16:22:07 »

What's the crucible made of? There are ceramics that can handle that, and ceramics that can't...

I do not know but the seller told me it can stand more than 3000 C

76

Chemistry / Can I melt aluminium oxide with a blow-torch?

« on: 09/10/2015 15:14:16 »

Hello.

If I take an oxyacetylene torch which can reach temperature up to 3200 C and point underneath a ceramic crucible filled with aluminum oxide which melts at 2100 C will the torch be able to melt the powder?

77

Chemistry / How to create 2500 celsius with charcoal or coal?

« on: 07/10/2015 16:48:37 »

How to create 2500 celsius with charcoal or coal?

78

Geology, Palaeontology & Archaeology / How to improve diamond growth

« on: 05/10/2015 12:36:36 »

Hello

I managed to make diamond powder by taking 80 atomic % (89.8 wt %) of iron, 15 atomic % (9.3 wt %) of phosphorus and 8 atomic % (1.9 wt %) of carbon and melted at 1250° C. with mapp gas and rapidly cooled to obtain an amorphous alloy. When the resulting amorphous alloy was annealed at 265° C. for 360 hours, I found by  that diamond crystals precipitated. The annealed alloy being very brittle was readily ground and subjected to gravity concentration to recover diamond powder.

The crystals were grain sizes. What can I add or how can I inrease diamond sizes?

79

Chemistry / Re: How to turn Aluminum Oxide powder into a solid form

« on: 27/08/2015 17:46:09 »

Thanks. If I want to reduce the melting point in this verneuil proces,  what are some fluxes can I use?

80

Chemistry / How to turn Aluminum Oxide powder into a solid form

« on: 26/08/2015 15:43:58 »

Hello

I would like to know How to turn Aluminum Oxide powder into a solid form so that it will be easier for me to melt it with a acetylene oxygen torch. When I blow it when it is in powdered form, it spatter all over the place thats why I want it to be in a solod form.

BR