XPost: sci.space.policy, sci.physics
From: fjmccall@gmail.com
jimp@specsol.spam.sux.com wrote:
>In sci.physics Sjouke Burry wrote:
>> On 15.10.16 17:25, Serigo wrote:
>>> On 10/15/2016 5:34 AM, Fred J. McCall wrote:
>>>> jimp@specsol.spam.sux.com wrote:
>>>>
>>>>>
>>>>> So how much to put about 25 of these on Mars so you can convert dirt
>>>>> to structural steel?
>>>>>
>>>>
>>>> Why in the hell would you need 32 MW of power to make steel? Total
>>>> power required to make a ton of steel from ore is around 5 MW-hrs.
>>>> You'd size your operation based on the power you had available and how
>>>> much steel you need.
>>>>
>>>
>>> Wrong again. you skipped over the part where you get ore from dirt, how
>>> much energy is that ?
>>>
>>> AND you skipped over the fact that the steel making facility is built
>>> and operated in a vacuum, add in those costs in terms of energy, and
>>> cleaning the air inside from fumes, that cost.
>>>
>>> your responces to posts here are simplistic, from 100,000 feet high with
>>> no reality, a salesman from Musk.
>>>
>> Steel production in Mars atmosphere may be much easier.
>> First:less heat-loss (almost no conduction to air)
>> second:molten iron will not start burning(no oxygen in air)
>> So quality steel might be produced there with
>> less energy(compared to earth).
>> So on Mars by all means USE the opportunities provided
>> by a near vacuum.
>>
>
>Steel is made by blowing oxygen through the pig iron.
>
True. What's your point?
>
>I have no clue where you are going to get either the burnt lime or
>dolomite that is required.
>
From the ground on Mars. The little tiny rovers have found dolomite,
so it's presumably fairly ubiquitous. Burnt lime is calcium oxide.
That shit's everywhere.
You having no idea how to do the obvious is not surprising to me.
--
"Some people get lost in thought because it's such unfamiliar
territory."
--G. Behn
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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